APA (7th ed.) Citation

(1989). The World Book Dictionary/ed. Clarence L. Barnhart, Robert K. Barnhart. World Book.

Chicago Style (17th ed.) Citation

The World Book Dictionary/ed. Clarence L. Barnhart, Robert K. Barnhart. World Book, 1989.

MLA (8th ed.) Citation

The World Book Dictionary/ed. Clarence L. Barnhart, Robert K. Barnhart. World Book, 1989.

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