APA (7th ed.) Citation

Willmott, H. P. (2003). First world war. DK.

Chicago Style (17th ed.) Citation

Willmott, H. P. First World War. London, UK: DK, 2003.

MLA (9th ed.) Citation

Willmott, H. P. First World War. DK, 2003.

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