APA (7th ed.) Citation

Willmott, H. P. (2007). World War I. DK Publ.

Chicago Style (17th ed.) Citation

Willmott, Hedley P. World War I. New York: DK Publ, 2007.

MLA (9th ed.) Citation

Willmott, Hedley P. World War I. DK Publ, 2007.

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