Cita APA (7a ed.)

Gilbreth, F. B., & Carey, E. G. (1948). Cheaper by the dozen. Bantam Books.

Cita Chicago Style (17a ed.)

Gilbreth, Frank B., y Ernestine Gilbreth Carey. Cheaper by the Dozen. New York: Bantam Books, 1948.

Cita MLA (9a ed.)

Gilbreth, Frank B., y Ernestine Gilbreth Carey. Cheaper by the Dozen. Bantam Books, 1948.