APA (7th ed.) Citation

Douglas, R. (1978). The advent of war, 1939-40. Macmillan.

Chicago Style (17th ed.) Citation

Douglas, Roy. The Advent of War, 1939-40. London: Macmillan, 1978.

MLA (9th ed.) Citation

Douglas, Roy. The Advent of War, 1939-40. Macmillan, 1978.

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