Johnson, E. R., & Williams, T., Jr. (2021). American military helicopters and vertical/short landing and takeoff aircraft since 1941. McFarland and Company, Inc..
Chicago-Zitierstil (17. Ausg.)Johnson, E. R., und Ted Williams, Jr. American Military Helicopters and Vertical/short Landing and Takeoff Aircraft Since 1941. Jefferson, North Carolina: McFarland and Company, Inc., 2021.
MLA-Zitierstil (9. Ausg.)Johnson, E. R., und Ted Williams, Jr. American Military Helicopters and Vertical/short Landing and Takeoff Aircraft Since 1941. McFarland and Company, Inc., 2021.
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