Use the navigation arrows on the presentation below to see the differences between source types.
When we talk about "scholarly vs. popular," it's not really a matter of either/or. For most projects, you'll likely want to use both! This is both because of the characteristics of the source types described above and because of something we call the information timeline.
As new information comes out, it's shared in different venues through a series of stages over time.
Information Timeline Graphic by adstarkel. Used under CC BY-NC-SA 2.0
Information Timeline