THE WORLD BOOK.. (2007). The world book encyclopedia E volume 6. World Book.
芝加哥风格引文THE WORLD BOOK.. The World Book Encyclopedia E Volume 6. Chicago: World Book, 2007.
MLA引文THE WORLD BOOK.. The World Book Encyclopedia E Volume 6. World Book, 2007.
警告：这些引文格式不一定是100％准确.