APA (7th ed.) Citation

Roskill, S. W. (1956). The war at sea 1939-1945: 2 The period of balance. The war at sea 1939-1945.

Chicago Style (17th ed.) Citation

Roskill, Stephen Wentworth. "The War at Sea 1939-1945: 2 The Period of Balance." The War at Sea 1939-1945 1956.

MLA (8th ed.) Citation

Roskill, Stephen Wentworth. "The War at Sea 1939-1945: 2 The Period of Balance." The War at Sea 1939-1945, 1956.

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