Lua APA (7ú heag.)

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.

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