APA (7th ed.) Zitazioa
Greenhalgh, T. (1993). Medicine today. Longman.
Chicago Style (17th ed.) Zitazioa
Greenhalgh, Trisha. Medicine Today. Hong Kong: Longman, 1993.
MLA (9th ed.) Zitazioa
Greenhalgh, Trisha. Medicine Today. Longman, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.