Why should you cite your sources?
There are many different styles of citation. Always ask your teachers which citation style they prefer.
These are the three most popular styles:
APA (American Psychological Association): Often used in the social sciences, e.g. psychology, education, anthropology
MLA (Modern Language Association): Often used in liberal arts and humanities, e.g. English
Chicago Manual of Style: Common in history, but sometimes used in other social sciences.
Your teacher may use a variation of one of the above styles or may use their own - it is usually stated in the assignment. When in doubt, ask the teacher!
There are a number of sites that will create bibliographies and works cited pages FOR you.
Many of the library's databases also provide citations. If you can't find these "Cite this" or "Citation" buttons, see a librarian for help.