APA (7th ed.) Citation

Britannica. (1980). Compton's encyclopedia and fact-index. Britannica.

Chicago Style (17th ed.) Citation

Britannica. Compton's Encyclopedia and Fact-index. Britannica, 1980.

MLA (8th ed.) Citation

Britannica. Compton's Encyclopedia and Fact-index. Britannica, 1980.

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