APA (7th ed.) Citation

Knorr, K., & Verba, S. . . j. e. (1961). The international system; theoretical essays: Edited by Klaus Knorr and Sidney Verba. Princeton University Press.

Chicago Style (17th ed.) Citation

Knorr, Klaus, and Sidney joint ed Verba. The International System; Theoretical Essays: Edited by Klaus Knorr and Sidney Verba. Princeton, N.J.: Princeton University Press, 1961.

MLA (9th ed.) Citation

Knorr, Klaus, and Sidney joint ed Verba. The International System; Theoretical Essays: Edited by Klaus Knorr and Sidney Verba. Princeton University Press, 1961.