Duty : memoirs of a Secretary at war
MLA
Gates, Robert Michael. Duty: Memoirs of a Secretary At War. New York: Alfred A. Knopf, 2014
APA, 7th edition
Gates, R. Michael. (2014). Duty: memoirs of a Secretary at war. New York: Alfred A. Knopf
Chicago, 17th edition
Gates, Robert Michael. Duty: memoirs of a Secretary at war. New York: Alfred A. Knopf, 2014