APA (7th ed.) Zitazioa

(1991). Biological Substances: International Standards and Reference Reagents. World Health Organization.

Chicago Style (17th ed.) Zitazioa

Biological Substances: International Standards and Reference Reagents. Geneva: World Health Organization, 1991.

MLA (9th ed.) Zitazioa

Biological Substances: International Standards and Reference Reagents. World Health Organization, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.