APA (7th ed.) Citation

Não informado. (2004). World helicopter and vertical flight. Air Age Publications.

Chicago Style (17th ed.) Citation

Não informado. World Helicopter and Vertical Flight. London: Air Age Publications, 2004.

MLA (8th ed.) Citation

Não informado. World Helicopter and Vertical Flight. Air Age Publications, 2004.

Warning: These citations may not always be 100% accurate.