World Book, I. (1996). The world book encyclopedia: W- x-y-z. World Book.
Chicagoスタイル(17版)引用形式World Book, Inc. The World Book Encyclopedia: W- X-y-z. Chicago: World Book, 1996.
MLA(9版)引用形式World Book, Inc. The World Book Encyclopedia: W- X-y-z. World Book, 1996.
警告: この引用は必ずしも正確ではありません.