Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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