APA aipamena

THE WORLD BOOK ENCYCLOPEDIA. (1989). The world book encyclopedia: Q - R. World Book.

Chicago Style aipamena

THE WORLD BOOK ENCYCLOPEDIA. The World Book Encyclopedia: Q - R. Chicago: World Book, 1989.

MLA aipamena

THE WORLD BOOK ENCYCLOPEDIA. The World Book Encyclopedia: Q - R. World Book, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.