APA Edition Citation

(1975). Encyclopaedia Britanica (15th ed.). Encyclopaedia Britanica.

Chicago Edition Citation

Encyclopaedia Britanica. 15th ed. London: Encyclopaedia Britanica, 1975.

MLA Edition Citation

Encyclopaedia Britanica. 15th ed. Encyclopaedia Britanica, 1975.

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