APA (7th ed.) Citation

(1974). The New Encyclopedia Britannica (15th ed.). Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

The New Encyclopedia Britannica. 15th ed. Chicago: Encyclopaedia Britannica, 1974.

MLA (9th ed.) Citation

The New Encyclopedia Britannica. 15th ed. Encyclopaedia Britannica, 1974.

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