APA (7th ed.) Citation

(1994). The new encyclopeadia Britannica in 33 volumes. Britannica.

Chicago Style (17th ed.) Citation

The New Encyclopeadia Britannica in 33 Volumes. Chicago: Britannica, 1994.

MLA (9th ed.) Citation

The New Encyclopeadia Britannica in 33 Volumes. Britannica, 1994.

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