APA (7th ed.) Citation

Taylor, J. W. R. (1968). Helicopters and VTOL aircraft. Doubleday.

Chicago Style (17th ed.) Citation

Taylor, John W. R. Helicopters and VTOL Aircraft. Garden City, N.Y.: Doubleday, 1968.

MLA (9th ed.) Citation

Taylor, John W. R. Helicopters and VTOL Aircraft. Doubleday, 1968.