APA (7th ed.) Citation

(1977). Britannica atlas ([Ed. 1977].). Encyclopaedia Britannica.

Chicago Style (17th ed.) Citation

Britannica Atlas. [Ed. 1977]. Chicago [etc.]: Encyclopaedia Britannica, 1977.

MLA (9th ed.) Citation

Britannica Atlas. [Ed. 1977]. Encyclopaedia Britannica, 1977.

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