Singer, J. D., & Alger, C. F. (1968). Quantitative international politics: Insights and evidence. Free Press.
Chicago Style aipamenaSinger, Joel David, and Chadwick F. Alger. Quantitative International Politics: Insights and Evidence. New York: Free Press, 1968.
MLA aipamenaSinger, Joel David, and Chadwick F. Alger. Quantitative International Politics: Insights and Evidence. Free Press, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.