Hughes HK-1 (H-4) Flying Boat Manual
U.S. War Department | angielski | miękka oprawa | 170 str. | 2009
Howard's Whirlybirds : Howard Hughes' Amazing Pioneering Helicopter Exploits
Donald J. Porter | angielski | twarda oprawa | 240 str. | 2013
AH-64 Apache Attack Helicopter
Headquarters Department of the Army | angielski | miękka oprawa | 656 str. | 2011
AH-64 Apache Boeing (McDonnell Douglas) 1975-2005
Chris Bishop | angielski | miękka oprawa | 48 str. | 2005
AH-64 Apache Units of Operations Enduring Freedom and Iraqi Freedom
Jonathan Bernstein | angielski | miękka oprawa | 96 str. | 2005