APA (7th ed.) Citation

Encyclopedia Britannica. (1975). Micropaedia: Ready reference and index (15th ed.). William Benton and Helen Hemingway Benton.

Chicago Style (17th ed.) Citation

Encyclopedia Britannica. Micropaedia: Ready Reference and Index. 15th ed. Chicago: William Benton and Helen Hemingway Benton, 1975.

MLA (9th ed.) Citation

Encyclopedia Britannica. Micropaedia: Ready Reference and Index. 15th ed. William Benton and Helen Hemingway Benton, 1975.

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