Wolfgang Saxon: Frank Gilbreth Jr., 89, Author Of 'Cheaper by the Dozen', New York Times, 20. Februar 2001. Abgerufen am 9. Juli 2008 „Frank Bunker Gilbreth Jr., a journalist whose life-with-father memoir Cheaper by the Dozen became a best seller and a popular movie of the same title, died on Sunday in Charleston, S.C., where he had lived for the last 50 years. He was 89 and also had a home in Nantucket, Mass.“
