Não informado. (2004). World helicopter and vertical flight. Air Age Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. World Helicopter and Vertical Flight. London: Air Age Publications, 2004.
Lua MLA (8ú heag.)Não informado. World Helicopter and Vertical Flight. Air Age Publications, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.