APA (7th ed.) Zitazioa
Hell, H. v. (1972). Human urinary Gonadotropins: Purification and characterisation.
Chicago Style (17th ed.) Zitazioa
Hell, Hans van. Human Urinary Gonadotropins: Purification and Characterisation. Groningen, 1972.
MLA (9th ed.) Zitazioa
Hell, Hans van. Human Urinary Gonadotropins: Purification and Characterisation. 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.