APA (7th ed.) Zitazioa
Walker, M. (1993). Writing research papers: A Norton guide (3rd ed.). W.W. Norton.
Chicago Style (17th ed.) Zitazioa
Walker, Melissa. Writing Research Papers: A Norton Guide. 3rd ed. New York: W.W. Norton, 1993.
MLA (9th ed.) Zitazioa
Walker, Melissa. Writing Research Papers: A Norton Guide. 3rd ed. W.W. Norton, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.