MLA

Thoolen, Hans, and Berth Verstappen. Human Rights Missions : a Study of the Fact-finding Practice of Non-governmental Organizations. Dordrecht: M. Nijhoff, 1986.

APA

Thoolen, H., & Verstappen, B. (1986). Human rights missions : a study of the fact-finding practice of non-governmental organizations. Dordrecht: M. Nijhoff.

Chicago

Thoolen, Hans., and Berth Verstappen. Human Rights Missions: A Study of the Fact-Finding Practice of Non-Governmental Organizations. Dordrecht: M. Nijhoff, 1986.