APA (7th ed.) Citation

Simpson, R. W. (1998). Airlife's helicopters and rotorcraft / R.W. Simpson. Airlife.

Chicago Style (17th ed.) Citation

Simpson, R. W. Airlife's Helicopters and Rotorcraft / R.W. Simpson. Shrewsbury: Airlife, 1998.

MLA (9th ed.) Citation

Simpson, R. W. Airlife's Helicopters and Rotorcraft / R.W. Simpson. Airlife, 1998.

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