APA (7th ed.) Citation

Roskill. (1957). The war at sea, 1939-1945. H. M. Stationery Off.

Chicago Style (17th ed.) Citation

Roskill. The War at Sea, 1939-1945. London: H. M. Stationery Off, 1957.

MLA (8th ed.) Citation

Roskill. The War at Sea, 1939-1945. H. M. Stationery Off, 1957.

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