APA (7th ed.) Zitazioa
McKeown, T. (1988). The origins of human disease. B. Blackwell.
Chicago Style (17th ed.) Zitazioa
McKeown, Thomas. The Origins of Human Disease. Oxford, UK : New York, NY, USA: B. Blackwell, 1988.
MLA (9th ed.) Zitazioa
McKeown, Thomas. The Origins of Human Disease. B. Blackwell, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.