APA (7th ed.) Citation

Westerman, P. F. (1916). The secret battleplane. S.W. Partridge.

Chicago Style (17th ed.) Citation

Westerman, Percy F. The Secret Battleplane. London: S.W. Partridge, 1916.

MLA (9th ed.) Citation

Westerman, Percy F. The Secret Battleplane. S.W. Partridge, 1916.