Tham khảo Northrop_YA-9

Tham khảo Northrop_YA-9

Ghi chú

↑ Jenkins 1998, p. 26.

Tài liệu

Donald, David and Daniel J. March, eds. "A-10 Fighting Warthog". Modern Battlefield Warplanes. Norwalk, CT: AIRtime, 2004. ISBN 1-880588-76-5.
Donald, David, ed. "Northrop YA-9". The Complete Encyclopedia of World Aircraft. Barnes & Noble Books, 1997. ISBN 0-7607-0592-5.
Jenkins, Dennis R. Fairchild-Republic A/OA-10 Warthog. North Branch, Minnesota: Specialty Press, 1998. ISBN 1-58007-013-2.

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Tài liệu tham khảo

WikiPedia: Northrop_YA-9 http://www.aero-web.org/specs/northrop/ya-9a.htm http://www.aviastar.org/air/usa/northrop_a-9.php https://commons.wikimedia.org/wiki/Northrop_YA-9?u...