APA (7th ed.) Citation

(1978). Encyclopedia Britannica: Volume IX. Encyclopedia Britannica Inc.

Chicago Style (17th ed.) Citation

Encyclopedia Britannica: Volume IX. Chigago: Encyclopedia Britannica Inc, 1978.

MLA (9th ed.) Citation

Encyclopedia Britannica: Volume IX. Encyclopedia Britannica Inc, 1978.

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