This guide should help you:
Use keywords from a research question or statement to search.
Distinguish differences between popular and scholarly articles.
For BIOL 418 you must find primary scientific articles.
For BIOL 418, reliable websites are allowed in the introductory section to illustrate concepts - and should be properly cited!
For BIOL 418 you need to find scholarly articles - and newspapers are NOT scholarly sources!
For BIOL 418 you cite your primary research article in the exact same citation style the article itself uses in its own references.