APA (7th ed.) Citation

Grant, R. M. (1969). U-boat intelligence, 1914-1918.

Chicago Style (17th ed.) Citation

Grant, Robert McQueen. U-boat Intelligence, 1914-1918. 1969.

MLA (9th ed.) Citation

Grant, Robert McQueen. U-boat Intelligence, 1914-1918. 1969.

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