APA (7th ed.) Citation

(1982). The New Enclopaedia Britannica in 30 volumes: Propaedia outline of knowledge (guide to the Britannica) (15th ed.). Enclopaedia Britannica Inc.

Chicago Style (17th ed.) Citation

The New Enclopaedia Britannica in 30 Volumes: Propaedia Outline of Knowledge (guide to the Britannica). 15th ed. London: Enclopaedia Britannica Inc, 1982.

MLA (8th ed.) Citation

The New Enclopaedia Britannica in 30 Volumes: Propaedia Outline of Knowledge (guide to the Britannica). 15th ed. Enclopaedia Britannica Inc, 1982.

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