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