DuBois, Augustus Jay (1902). The Mechanics of Engineering. New York: John Wiley & Sons. Consultado el 10 de agosto de 2008.
Bender, C. (1890). «Discussion on Cantilever Bridges by C.F. Findlay». Transactions of the Canadian Society of Civil Engineers (Canadian Society of Civil Engineers.) 3. Consultado el 10 de agosto de 2008.