Platt-LePage XR-1: Perbedaan antara revisi
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* {{cite book|last1=Charnov|first1=Bruce H.|title=From Autogiro to Gyroplane: The Amazing Survival of an Aviation Technology|year=2003|publisher=Praeger|location=Westport, CT|isbn=978-1-56720-503-9}}
* {{cite book|last1=Collier|first1=Larry|coauthors=Kas Thomas|title=How To Fly Helicopters|url=https://archive.org/details/howtoflyhelicopt0000coll_n2e9|edition=2nd|year=1986|publisher=Tab Books|location=Blue Ridge Summit, PA|isbn=978-0-8306-2386-0}}
* {{cite web |url=http://www.nasm.si.edu/collections/artifact.cfm?id=A19600305000 |title=Platt-LePage XR-1 |first=Roger D. |last=Connor |coauthors=Russell Lee |year=2000 |publisher=Smithsonian National Air and Space Museum |accessdate=2010-12-02 |archive-date=2011-04-02 |archive-url=https://web.archive.org/web/20110402204039/http://www.nasm.si.edu/collections/artifact.cfm?id=A19600305000 |dead-url=yes }}
* {{cite book|last1=Francillon|first1=René J.|title=McDonnell Douglas Aircraft since 1920: Volume II|url=http://books.google.com/books?id=QEe6WUHADJ8C&pg=PA48#v=onepage&q&f=false|accessdate=2010-12-01|year=1990|publisher=Naval Institute Press|location=Annapolis, MD|isbn=1-55750-550-0}}
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