↑ 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.
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