APA (7th ed.) Citation

Edwards, B. (2006). War of the U-Boats: British merchantmen under fire (1. publ.). Pen & Sword Maritime.

Chicago Style (17th ed.) Citation

Edwards, Bernard. War of the U-Boats: British Merchantmen Under Fire. 1. publ. Barnsley: Pen & Sword Maritime, 2006.

MLA (9th ed.) Citation

Edwards, Bernard. War of the U-Boats: British Merchantmen Under Fire. 1. publ. Pen & Sword Maritime, 2006.