APA (7th ed.) Citation

(1980). Britanica Atlas; Encyclopedia Britanica, Inc. Britanica.

Chicago Style (17th ed.) Citation

Britanica Atlas; Encyclopedia Britanica, Inc. Britanica, 1980.

MLA (8th ed.) Citation

Britanica Atlas; Encyclopedia Britanica, Inc. Britanica, 1980.

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