APA (7th ed.) Citation

Dupuy, R. E., & Gueniffey, P. (1993). The Harper encyclopedia of military history: From 3500 B.C. to the present (4. ed.). HarperCollins.

Chicago Style (17th ed.) Citation

Dupuy, Richard E., and Patrice Gueniffey. The Harper Encyclopedia of Military History: From 3500 B.C. to the Present. 4. ed. New York, NY: HarperCollins, 1993.

MLA (9th ed.) Citation

Dupuy, Richard E., and Patrice Gueniffey. The Harper Encyclopedia of Military History: From 3500 B.C. to the Present. 4. ed. HarperCollins, 1993.