Cita APA

U.S. department of commerce. (1921). Survey of current business. U.S. department of commerce.

Citación estilo Chicago

U.S. department of commerce. Survey of Current Business. Washington D.C: U.S. department of commerce, 1921.

Cita MLA

U.S. department of commerce. Survey of Current Business. U.S. department of commerce, 1921.