APA (7th ed.) Citation

Encyclopaedia Britannica, inc. (1981). The new Britannica. Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Encyclopaedia Britannica, inc. The New Britannica. Chicago: Encyclopedia Britannica, 1981.

MLA (9th ed.) Citation

Encyclopaedia Britannica, inc. The New Britannica. Encyclopedia Britannica, 1981.

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