So secondary sources cited and relied upon by the sources we used this week? Or this week's links as sources?

Using quotes from the source lends credibility and can also allow the journalist to keep their own assessment out of the reporting and pins the accuracy of the information on the credibility of the source as clearly as possible. This does not mean that quotes cannot be made up or authority relied upon inaccurately or in bad faith. This quote is repeated by yahoo finance, politico and the hollywood reporter but there exists the possibility that they are quoting each other.