Cita APA (7a ed.)

Singer, J. D. (1990). Models, methods, and progress in world politics: A peace research odyssey. Westview Press.

Cita Chicago Style (17a ed.)

Singer, Joel David. Models, Methods, and Progress in World Politics: A Peace Research Odyssey. Boulder,CO: Westview Press, 1990.

Cita MLA (9a ed.)

Singer, Joel David. Models, Methods, and Progress in World Politics: A Peace Research Odyssey. Westview Press, 1990.