Different disciplines tend to use different styles of documentation. You may want to check with your professor to see if a particular style is preferred. Whatever style you use, be consistent. Choose one style and stick with it.

view examples of in-text citation styles:

Humanities: MLA or Chicago

Social Sciences: APA, Chicago, or ASA (Sociology)

Engineering and Chemistry: ACS

Physics and Astronomy: AIP

view examples of bibliography entry styles:

Humanities: MLA or Chicago

Social Sciences: APA or Chicago

Engineering and Chemistry: ACS

Physics and Astronomy: AIP

Government documents: Chicago or MLA