APA (7th ed.) Citation

(1938). Britannica book of the year. Encyclopaedia Britannica, Inc..

Chicago Style (17th ed.) Citation

Britannica Book of the Year. Chicago: Encyclopaedia Britannica, Inc., 1938.

MLA (8th ed.) Citation

Britannica Book of the Year. Encyclopaedia Britannica, Inc., 1938.

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