APA (7th ed.) Citation

Stern, R. C. (1999). Battle beneath the waves: The U-boat war. Arms and Armour.

Chicago Style (17th ed.) Citation

Stern, Robert Cecil. Battle Beneath the Waves: The U-boat War. London: Arms and Armour, 1999.

MLA (9th ed.) Citation

Stern, Robert Cecil. Battle Beneath the Waves: The U-boat War. Arms and Armour, 1999.