APA (7e ed.) Bronvermelding

World Book, I. (1999). The world book encyclopedia: I. World Book.

Chicago (17e ed.) Bronvermelding

World Book, Inc. The World Book Encyclopedia: I. Chicago: World Book, 1999.

MLA (9e ed.) Bronvermelding

World Book, Inc. The World Book Encyclopedia: I. World Book, 1999.