APA (7th ed.) Citation

International Political Science Association & Ehrmann, H. W. (1958). Interest groups on four continents. University of Pittsburgh Press.

Chicago Style (17th ed.) Citation

International Political Science Association and Henry Walter Ehrmann. Interest Groups on Four Continents. [Pittsburgh]: University of Pittsburgh Press, 1958.

MLA (9th ed.) Citation

International Political Science Association and Henry Walter Ehrmann. Interest Groups on Four Continents. University of Pittsburgh Press, 1958.