APA (7th ed.) Zitazioa

(1985). Collier's encyclopedia with bibliography and index. Macmillan Educational.

Chicago Style (17th ed.) Zitazioa

Collier's Encyclopedia with Bibliography and Index. New York: Macmillan Educational, 1985.

MLA (9th ed.) Zitazioa

Collier's Encyclopedia with Bibliography and Index. Macmillan Educational, 1985.