APA (7th ed.) Citation

(1992). The new encyclopaedia Britannica (15th ed.). Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

The New Encyclopaedia Britannica. 15th ed. Chicago [etc.]: Encyclopaedia Britannica, 1992.

MLA (9th ed.) Citation

The New Encyclopaedia Britannica. 15th ed. Encyclopaedia Britannica, 1992.

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