APA (7th ed.) Citation

(1985). The New Encyclopaedia Britannica. [electronic resource]: Encyclopaedia Britannica (15th ed. rev.). Encyclopaedia Britannica Inc.

Chicago Style (17th ed.) Citation

The New Encyclopaedia Britannica. [electronic Resource]: Encyclopaedia Britannica. 15th ed. rev. Chicago: Encyclopaedia Britannica Inc, 1985.

MLA (8th ed.) Citation

The New Encyclopaedia Britannica. [electronic Resource]: Encyclopaedia Britannica. 15th ed. rev. Encyclopaedia Britannica Inc, 1985.