Cita APA (7th ed.)

Singer, J. D., & Alger, C. F. (1968). Quantitative international politics: Insights and evidence. Free Press.

Cita Chicago (17th ed.)

Singer, J. David, i Chadwick F. Alger. Quantitative International Politics: Insights and Evidence. New York: Free Press, 1968.

Cita MLA (9th ed.)

Singer, J. David, i Chadwick F. Alger. Quantitative International Politics: Insights and Evidence. Free Press, 1968.