APA (7th ed.) Zitazioa

Donovan, F. R. (1964). The vikings. American Heritage Publishing.

Chicago Style (17th ed.) Zitazioa

Donovan, Frank R. The Vikings. New York: American Heritage Publishing, 1964.

MLA (9th ed.) Zitazioa

Donovan, Frank R. The Vikings. American Heritage Publishing, 1964.