APA (7th ed.) Zitazioa
Stevenson, L. (1974). Seven theories of human nature. OUP.
Chicago Style (17th ed.) Zitazioa
Stevenson, Leslie. Seven Theories of Human Nature. New York: OUP, 1974.
MLA (9th ed.) Zitazioa
Stevenson, Leslie. Seven Theories of Human Nature. OUP, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.