APA (7th ed.) Citation

Penrose, H. (1969). British aviation: The great war armistice 1915 - 1919 (1. publ.). Putnam.

Chicago Style (17th ed.) Citation

Penrose, Harald. British Aviation: The Great War Armistice 1915 - 1919. 1. publ. London: Putnam, 1969.

MLA (9th ed.) Citation

Penrose, Harald. British Aviation: The Great War Armistice 1915 - 1919. 1. publ. Putnam, 1969.

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