APA (7th ed.) Citation

(1980). Encyclopedia Britannica (Volume 6). Encyclopedia Britannica Inc.

Chicago Style (17th ed.) Citation

Encyclopedia Britannica (Volume 6). Chigago: Encyclopedia Britannica Inc, 1980.

MLA (9th ed.) Citation

Encyclopedia Britannica (Volume 6). Encyclopedia Britannica Inc, 1980.

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