APA (7th ed.) Citation

(2013). The world book encyclopedia volume 6 - E. World Book.

Chicago Style (17th ed.) Citation

The World Book Encyclopedia Volume 6 - E. Chicago: World Book, 2013.

MLA (9th ed.) Citation

The World Book Encyclopedia Volume 6 - E. World Book, 2013.

Warning: These citations may not always be 100% accurate.