APA (7th ed.) Citation

Ambrose. (1999). Duty, honor, country: A history of west point. The Johns Hopkins Press.

Chicago Style (17th ed.) Citation

Ambrose. Duty, Honor, Country: A History of West Point. Maryland: The Johns Hopkins Press, 1999.

MLA (8th ed.) Citation

Ambrose. Duty, Honor, Country: A History of West Point. The Johns Hopkins Press, 1999.