APA (7th ed.) Citation

(1975). Macropaedia: Knowledge in depth (15th ed.). William Benton and Helen Hemingway Benton.

Chicago Style (17th ed.) Citation

Macropaedia: Knowledge in Depth. 15th ed. Chicago: William Benton and Helen Hemingway Benton, 1975.

MLA (9th ed.) Citation

Macropaedia: Knowledge in Depth. 15th ed. William Benton and Helen Hemingway Benton, 1975.

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