Gilbreth, F. B., & Carey, E. G. (1948). Cheaper by the dozen. Bantam Books.
芝加哥风格引文Gilbreth, Frank B., 与 Ernestine Gilbreth Carey. Cheaper by the Dozen. New York: Bantam Books, 1948.
MLA引文Gilbreth, Frank B., 与 Ernestine Gilbreth Carey. Cheaper by the Dozen. Bantam Books, 1948.
警告：这些引文格式不一定是100％准确.