APA (7th ed.) Zitazioa
(2010). The new encyclopaedia Britannica: Propaedia outline of knowledge: Guide to the Britanica (15th ed.). Encyclopaedia Britanica Inc..
Chicago Style (17th ed.) Zitazioa
The New Encyclopaedia Britannica: Propaedia Outline of Knowledge: Guide to the Britanica. 15th ed. Chicago: Encyclopaedia Britanica Inc., 2010.
MLA (9th ed.) Zitazioa
The New Encyclopaedia Britannica: Propaedia Outline of Knowledge: Guide to the Britanica. 15th ed. Encyclopaedia Britanica Inc., 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.