APA Edition Citation

Encyclopaedia Britannica. (1971). Encyclopaedia Britannica ( Vol. 9). Willam Benton.

Chicago Edition Citation

Encyclopaedia Britannica. Encyclopaedia Britannica ( Vol. 9). London: Willam Benton, 1971.

MLA Edition Citation

Encyclopaedia Britannica. Encyclopaedia Britannica ( Vol. 9). Willam Benton, 1971.

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