Why do you need to cite your sources? There actually IS a reason!
Citing sources gives credit to other people whose ideas you've used and allows readers to find the sources you've consulted. Following citations is a great way for you to find additional sources for your research. Watch this short video to learn more.
Different disciplines use different citation styles. The most common styles are MLA, APA, and Chicago; your professor will specify which style to use. The library has several citation guides, and there are also useful websites to visit for more information.