APA (7th ed.) Citation

Clark, G. N. (1942). Belgium and the war. The Oxford Univ. Pr.

Chicago Style (17th ed.) Citation

Clark, G. N. Belgium and the War. Oxford: The Oxford Univ. Pr, 1942.

MLA (9th ed.) Citation

Clark, G. N. Belgium and the War. The Oxford Univ. Pr, 1942.

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