APA aipamena

(2001). The World book encyclopedia: A V.1. World book, Inc.

Chicago Style aipamena

The World Book Encyclopedia: A V.1. World book, Inc, 2001.

MLA aipamena

The World Book Encyclopedia: A V.1. World book, Inc, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.