グーピー No.1
Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. pp. 429
“The Goupy Triplane”. Flight: 65. (3 January 1909). http://www.flightglobal.com/pdfarchive/view/1909/1909%20-%200063.html 2008年4月9日閲覧。.