APA (7th ed.) Zitazioa

World Book, I. (1996). The world book encyclopedia: Q-r. World Book.

Chicago Style (17th ed.) Zitazioa

World Book, Inc. The World Book Encyclopedia: Q-r. Chicago: World Book, 1996.

MLA (9th ed.) Zitazioa

World Book, Inc. The World Book Encyclopedia: Q-r. World Book, 1996.