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Donald Keyhoe Tham khảo|df=
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Donald Keyhoe Tham khảoLiên quan
Donald Donald Trump Donald O'Connor Donald Knuth Donald Keyhoe Donald J. Cram Donald Eugene Webb Donald Howard Menzel Donald Rumsfeld Donald H. BochkayTài liệu tham khảo
WikiPedia: Donald Keyhoe //nla.gov.au/anbd.aut-an36000112 http://cevsite.com/keyhoe.htm http://galenet.galegroup.com/servlet/BioRC http://www.heraldtribune.com/article/20080111/BLOG... http://www.herogames.com/forums/showthread.php?t=4... http://www.sacred-texts.com/ufo/fsar/index.htm http://www.hrc.utexas.edu/multimedia/video/2008/wa... http://catalogue.bnf.fr/ark:/12148/cb11114778h http://data.bnf.fr/ark:/12148/cb11114778h http://id.loc.gov/authorities/names/n85158016