Keen, D. (2018). Useful Enemies: When Waging Wars Is More Important Than Winning Them. Yale University Press.
Chicago-Zitierstil (17. Ausg.)Keen, David. Useful Enemies: When Waging Wars Is More Important Than Winning Them. New Haven, CT: Yale University Press, 2018.
MLA-Zitierstil (8. Ausg.)Keen, David. Useful Enemies: When Waging Wars Is More Important Than Winning Them. Yale University Press, 2018.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.