APA (7th ed.) Citation

Nowarra, H. J. (1990). German helicopters, 1928-1945. Schiffer Publishing.

Chicago Style (17th ed.) Citation

Nowarra, Heinz J. German Helicopters, 1928-1945. West Chester, PA: Schiffer Publishing, 1990.

MLA (9th ed.) Citation

Nowarra, Heinz J. German Helicopters, 1928-1945. Schiffer Publishing, 1990.

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