APA (7th ed.) Zitazioa
World Book, Inc. (2004). The World Book Encyclopedia: Volume -15. World Book, Inc.
Chicago Style (17th ed.) Zitazioa
World Book, Inc. The World Book Encyclopedia: Volume -15. Chicago: World Book, Inc, 2004.
MLA (9th ed.) Zitazioa
World Book, Inc. The World Book Encyclopedia: Volume -15. World Book, Inc, 2004.
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