APA (7th ed.) Citation

Encyclopedia Britannica. (1968). Britannica perspectives. Encyclopedia Britannica.

Chicago Style (17th ed.) Citation

Encyclopedia Britannica. Britannica Perspectives. Chicago: Encyclopedia Britannica, 1968.

MLA (9th ed.) Citation

Encyclopedia Britannica. Britannica Perspectives. Encyclopedia Britannica, 1968.

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