APA (7th ed.) Citation

Hamilton & Hamilton, R. F. (2005). A photographic history of World War I. Paragon.

Chicago Style (17th ed.) Citation

Hamilton and Richard F. Hamilton. A Photographic History of World War I. Bath: Paragon, 2005.

MLA (8th ed.) Citation

Hamilton and Richard F. Hamilton. A Photographic History of World War I. Paragon, 2005.

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