APA (7th ed.) Citation

Penrose, H. (1967). British aviation: The pioneer years 1903-1914. Putnam; Aero Publishers.

Chicago Style (17th ed.) Citation

Penrose, Harald. British Aviation: The Pioneer Years 1903-1914. London, Fallbrook (Calif.): Putnam; Aero Publishers, 1967.

MLA (8th ed.) Citation

Penrose, Harald. British Aviation: The Pioneer Years 1903-1914. Putnam; Aero Publishers, 1967.