^Mondey, David, ed. (1978). "Complete Illustrated Encyclopedia of the World's Aircraft". Complete Illustrated Encyclopedia of the World's Aircraft. A&W Publishers, Inc. p. 64. ISBN0-89479-032-3.
^Johnson, E.R. (2009). American Flying Boats and Amphibious Aircraft: An Illustrated History. Jefferson, NC: McFarland & Co. pp. 353–355. ISBN978-0786439744.