Not only do you need to cite your sources, but you need to format them according to a particular style. Your instructor will often ask you to use a certain style in your paper. Here are links for more information about the styles commonly used in the health sciences:
If you are writing a paper that is - or might be published as - a literature review, or scoping review, or systematic review, or other type of review, then your search needs to be more comprehensive, and you might start with a seemingly unmanageable number of results. There are some tips and tools that might be helpful, which you can find on my Literature Reviews, Systematic Reviews & More for Health Sciences guide.
"Academic dishonesty is prohibited in all programs of the University. Academic dishonesty includes but is not limited to: cheating, fabrication, plagiarism, and facilitating dishonesty." University of Massachusetts Amherst Academic Honesty Policy and Appeal Procedure
Here are some links for more information about avoiding academic dishonesty: