APA (7th ed.) Citation

(1975). The new encylopedia britannica in 30 Volumes. Encyclopedia britannica, Inc.

Chicago Style (17th ed.) Citation

The New Encylopedia Britannica in 30 Volumes. London: Encyclopedia britannica, Inc, 1975.

MLA (9th ed.) Citation

The New Encylopedia Britannica in 30 Volumes. Encyclopedia britannica, Inc, 1975.

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