APA (7th ed.) Citation

Westerman, P. F. A Sub and a Submarine: The Story of H.M. Submarine R19 in the Great War.

Chicago Style (17th ed.) Citation

Westerman, Percy F. A Sub and a Submarine: The Story of H.M. Submarine R19 in the Great War.

MLA (9th ed.) Citation

Westerman, Percy F. A Sub and a Submarine: The Story of H.M. Submarine R19 in the Great War.

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