APA (7th ed.) Zitazioa
Cooley, T. (1992). The Norton guide to writing. Norton.
Chicago Style (17th ed.) Zitazioa
Cooley, Thomas. The Norton Guide to Writing. New York: Norton, 1992.
MLA (9th ed.) Zitazioa
Cooley, Thomas. The Norton Guide to Writing. Norton, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.