reply to u/edumanos at https://www.reddit.com/r/antinet/comments/13p0myn/academic_using_of_zettelkasten/
The Luhmann's method was very specific to him, but the broader slip box method has been in wide use in academic settings for centuries, particularly in the humanities. I most often recommend Umberto Eco's book in conjunction with Adler/Van Doren's How to Read a Book, but below are a small selection of manuals on very closely related note taking methods. These can be found in a handful of languages and some even more specific to particular areas of study, though broadly they're all useful to almost any area. You'll note that some are available for free on archive.org as they're out of copyright, have been scanned, or are open educational resources. I've tried to link most of these for convenience.
If this list isn't enough, or you're looking for something written for a specific subfield (sociology, for example), let me know as I'm sure there are a plethora of others, or even some fun short pieces like:
- Thomas, Keith. “Diary: Working Methods.” London Review of Books, June 10, 2010. https://www.lrb.co.uk/the-paper/v32/n11/keith-thomas/diary.
- Mills, C. Wright. “On Intellectual Craftsmanship (1952).” Society 17, no. 2 (January 1, 1980): 63–70. https://doi.org/10.1007/BF02700062.
My favorite short/overview video is that of Victor Margolin's process: https://www.youtube.com/watch?v=Kxyy0THLfuI.
As for self-plagiarism, some have used a red pencil or other means to mark cards (notes) they've used in specific works as they write so that they know they've been used and can then self-cite their prior works to avoid self-plagiarism or to up their citation count.
- Ahrens, Sönke. How to Take Smart Notes: One Simple Technique to Boost Writing, Learning and Thinking – for Students, Academics and Nonfiction Book Writers. Create Space, 2017.
- Allosso, Dan, and S. F. Allosso. How to Make Notes and Write. Minnesota State Pressbooks, 2022. https://minnstate.pressbooks.pub/write/.
- Barzun, Jacques. The Modern Researcher. Boston : Houghton Mifflin Co., 1992. http://archive.org/details/modernresearcher00barz_1.
- Bernstein, Mark. Tinderbox: The Tinderbox Way. 3rd ed. Watertown, MA: Eastgate Systems, Inc., 2017. http://www.eastgate.com/Tinderbox/TinderboxWay/index.html.
- Blair, Ann M. “Manuals on Note-Taking (Ars Excerpendi).” In Brill’s Encyclopaedia of the Neo-Latin World. Brill, May 7, 2014. https://referenceworks.brillonline.com/entries/encyclopaedia-of-the-neo-latin-world/manuals-on-note-taking-ars-excerpendi-B9789004271029_0058.
- Chavigny, Paul Marie Victor. Organisation du travail intellectuel, recettes pratiques à l’usage des étudiants de toutes les facultés et de tous les travailleurs. Paris: Delagrave, 1918. https://catalog.hathitrust.org/Record/011209555.
- DeCarlo, Matthew, Cory Cummings, and Kate Agnelli. Graduate Research Methods in Social Work. Open Social Work, 2021. https://doi.org/10.21061/msw-research.
- Dow, Earle Wilbur. Principles of a Note-System for Historical Studies. New York: Century Company, 1924.
- Eco, Umberto. How to Write a Thesis. Translated by Caterina Mongiat Farina and Geoff Farina. 1977. Reprint, Cambridge, MA, USA: MIT Press, 2015. https://mitpress.mit.edu/books/how-write-thesis.
- Gessner, Konrad. Pandectarum Sive Partitionum Universalium. 1st Edition. Zurich: Christoph Froschauer, 1548.
- Goutor, Jacques. The Card-File System of Note-Taking. Approaching Ontario’s Past 3. Toronto: Ontario Historical Society, 1980. http://archive.org/details/cardfilesystemof0000gout.
- Heyde, Johannes Erich, and Heinz Siegel. Technik des wissenschaftlichen Arbeitens. 10th ed. 1931. Reprint, Berlin: Kiepert, 1970. https://www.worldcat.org/title/TECHNIK-DES-WISSENSCHAFTLICHEN-ARBEITENS.-MIT-E.-ERG.BEITR.-DOKUMENTATION-VON-HEINZ-SIEGEL.-10.DURCHGES.AUFL/oclc/1075391218.
- Kuntze, Friedrich. Die Technik der geistigen Arbeit (The technique of mental work). Carl Winter’s Universitätsbuchhandlung, 1923.
- Langlois, Charles Victor, and Charles Seignobos. Introduction to the Study of History. Translated by George Godfrey Berry. First. New York: Henry Holt and company, 1898. http://archive.org/details/cu31924027810286.
- ———. Introduction to the study of history. London, Cass, 1966. http://archive.org/details/introductiontos00langgoog.
- Leicester, Mal, and Denise Taylor. Take Great Notes. 1st edition. Thousand Oaks, CA: SAGE Publications Ltd, 2019.
- Maxfield, Ezra Kempton. “Suggestions for Note Taking.” Delaware College Bulletin 6, no. 4 (December 1910).
- Mei, Jennifer. Refining, Reading, Writing : Includes 2009 Mla Update Card. Nelson Canada, 2007. http://archive.org/details/refiningreadingw0000meij.
- Range, Ellen. Take Note! Taking and Organizing Notes. Ann Arbor, Michigan: Cherry Lake Publishing, 2014.
- Schrag, Zachary M. The Princeton Guide to Historical Research. Princeton University Press, 2021. https://doi.org/10.2307/j.ctv1pdrrc9.
- Sertillanges, Antonin Gilbert. La vie intellectuelle; son esprit, ses conditions, ses méthodes. Paris, Éditions de la Revue des jeunes, 1921. http://archive.org/details/lavieintellectue00sert.
- Sertillanges, Antonin Gilbert, and Mary Ryan. The Intellectual Life: Its Spirit, Conditions, Methods. First English Edition, Fifth printing. 1921. Reprint, Westminster, MD: The Newman Press, 1960. http://archive.org/details/a.d.sertillangestheintellectuallife.
- Seward, Samuel Swayze. Note-Taking. Boston, Allyn and Bacon, 1910. http://archive.org/details/cu31924012997627.
- Webb, Sidney, and Beatrice Webb. Methods of Social Study. London; New York: Longmans, Green & Co., 1932. http://archive.org/details/b31357891.
- Weinberg, Gerald M. Weinberg on Writing: The Fieldstone Method. New York, N.Y: Dorset House, 2005.
Good luck!