APA (7th ed.) Citation

Encyclopedia Britannica. (1987). The New Encyclopedia Britannica (15th ed.). Encyclopaedia Britannica, Inc..

Chicago Style (17th ed.) Citation

Encyclopedia Britannica. The New Encyclopedia Britannica. 15th ed. Chicago: Encyclopaedia Britannica, Inc., 1987.

MLA (9th ed.) Citation

Encyclopedia Britannica. The New Encyclopedia Britannica. 15th ed. Encyclopaedia Britannica, Inc., 1987.

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