Cita APA (7th ed.)

Gilbreth, J. F. B. (1948). Cheaper by the Dozen. Thomas Y Crowell Co.

Cita Chicago (17th ed.)

Gilbreth, J.R. Frank B. Cheaper by the Dozen. New York, Estados Unidos: Thomas Y Crowell Co, 1948.

Cita MLA (9th ed.)

Gilbreth, J.R. Frank B. Cheaper by the Dozen. Thomas Y Crowell Co, 1948.