APA

Koops Joachim A, . (2017). The Oxford Handbook of United Nations Peacekeeping Operations. New York: Oxford University Press.

Chicago

Koops Joachim A, . 2017. The Oxford Handbook of United Nations Peacekeeping Operations. New York: Oxford University Press.

Harvard

Koops Joachim A, . (2017). The Oxford Handbook of United Nations Peacekeeping Operations. New York: Oxford University Press.

MLA

Koops Joachim A, . The Oxford Handbook of United Nations Peacekeeping Operations. New York: Oxford University Press. 2017.