APA (7th ed.) Citation

Cocker, M. (2008). Royal Navy submarines: 1901 to the present day. Pen & Sword Maritime.

Chicago Style (17th ed.) Citation

Cocker, Maurice. Royal Navy Submarines: 1901 to the Present Day. Barnsley, England: Pen & Sword Maritime, 2008.

MLA (9th ed.) Citation

Cocker, Maurice. Royal Navy Submarines: 1901 to the Present Day. Pen & Sword Maritime, 2008.