Cita APA (7a ed.)

Singlaub, J. K., & McConnell, M. (1991). Hazardous duty: An American soldier in the twentieth century. Summit Books.

Cita Chicago Style (17a ed.)

Singlaub, John K., y Malcolm McConnell. Hazardous Duty: An American Soldier in the Twentieth Century. New York [etc.]: Summit Books, 1991.

Cita MLA (9a ed.)

Singlaub, John K., y Malcolm McConnell. Hazardous Duty: An American Soldier in the Twentieth Century. Summit Books, 1991.