McKenna, J. A., & Allen, N. (2010). Skycrane: Igor Sikorsky's last vision. American Institute of Aeronautics and Astronautics.
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Dyfyniad Arddull Chicago
McKenna, John A., and Ned Allen. Skycrane: Igor Sikorsky's Last Vision. Reston, Va.: American Institute of Aeronautics and Astronautics, 2010.
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Dyfyniad MLA
McKenna, John A., and Ned Allen. Skycrane: Igor Sikorsky's Last Vision. American Institute of Aeronautics and Astronautics, 2010.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.