In one or two sentences, written in third person, describe how you  would use this in your paper; e.g., “This article would be helpful for  informing readers about the quantity of plastic in the world’s oceans.”
you’re sticking with the same subject. Three additional sources must be located; use two of the new sources for the research project. The databases at the library must provide at least one of the new sources. 
Saying something like, “Readers can learn more about the issue from this source,” would be appropriate. All you need to do is that.
https://library.daytonastate.edu/index