APA引文

THE WORLD BOOK.. (2007). The world book W-X-Y-Z volume 21. World Book.

Chicago Style (17th ed.) Citation

THE WORLD BOOK.. The World Book W-X-Y-Z Volume 21. Chicago: World Book, 2007.

MLA引文

THE WORLD BOOK.. The World Book W-X-Y-Z Volume 21. World Book, 2007.

警告：這些引文格式不一定是100％准確.