ISBN 0-85045-417-4. https://books.google.com/books?ie=UTF-8&id=AAdYFeW2fnoC&dq=first+polish+army&lpg=PA27&pg=PA26&sig=WN1KQpOlr7_qConUSBptg32zoaE 表示 編集
BLACK HAWK Helicopter Achieves First Flight". Sikorsky, 29 August 2008. ^ New Army Black Hawk succeeds in combat – US Army, 4 March 2010 ^ a b Colucci,