APA (7th ed.) Citation

Clark, G. N. S. (1942). Belgium and the war. O.U.P.

Chicago Style (17th ed.) Citation

Clark, G. N. Sir. Belgium and the War. Oxford: O.U.P, 1942.

MLA (9th ed.) Citation

Clark, G. N. Sir. Belgium and the War. O.U.P, 1942.

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