Sources: The Memoirs of Glückel of Hameln. Translated with introduction and notes by Marvin Lowenthal. New York: 1932. Reprinted with new introduction by Robert S. Rosen, New York: 1960, 1977, p. 119 - 120; 2 - 3.
Stephen Dubner. “Should Kids Pay Back Their Parents for Raising Them?” Freakonomics Radio. Podcast audio. October 8, 2015.