1968: Political Parties and Democracy in the United States,Scribners.
1976: The Comparative Study of Political Parties, St.Martin’s. Application of party theory to studies of three parties: French Gaullist, U.S. Democratic, and Guinean Democratic.
1980: Political Parties and Linkage: A Comparative Perspective, editor, author of chapter one, “Political Parties and Linkage,” Yale University Press.
1984: The Human Polity: An Introduction to Political Science, Houghton Mifflin.
1988: When Parties Fail: Emerging Alternative Organizations, co‑edited with Peter Merkl. Princeton University Press. Author of first chapter, “When Linkage Fails”.
1989: The
Human Polity: An Introduction to Political Science,
second
edition, Houghton Mifflin, extensive revisions.
1993: The Human Polity: An Introduction to Political Science, third edition, Houghton Mifflin, extensive revisions.
1994: How Political Parties Work: Perspectives from Within, editor, Praeger. Author of “Introduction” and “Conclusion:Toward A Theory of How Political Parties Work.”
1997: The Human Polity: A Comparative Introduction to Political Science, fourth edition, Houghton Mifflin, extensive revisions. Translated into Arabic in 1998.
1998: The Human Polity: A Comparative Introduction to Political Science, first brief edition, Houghton Mifflin.
1999: Cleavages, Parties, and Voters: Studies from Bulgaria, the Czech Republic, Hungary, Poland and Romania, co-edited with Andrea Rommele and Georgi Karasimeonov, author second chapter, “Cleavages, Parties and Voters,” Praeger.
2003: The Human Polity: A Comparative Introduction to Political Science, fifth edition, Houghton Mifflin, extensive revisions.
2004: How Political Parties Respond, edited with Thomas Poguntke, Frank Cass. Author of conclusion, “Five Variations on a Theme: Interest Aggregation by Party Today.”
2006: The Human Polity: A Comparative Introduction to Political Science, second brief edition, Houghton Mifflin.
2007: When Parties Prosper: The Uses of Electoral Success, edited with Peter Merkl, Lynne Rienner. Co-author of Introduction, “Political Parties in the Twenty-First Century” and Author of Conclusion, “When Parties Dedemocratize.”
2010: Political Parties and Democracy, 5 volumes, Praeger Publishers. General Editor all volumes; Volume Editor or Co-Editor, all volumes; author of introduction to all volumes “Political Parties and Democracy: Three Stages of Power,” coauthor of introduction to volume 1 “Introduction to Political Parties and Democracy: The Americas,” with Jorge Lanzaro, author of “Conclusion to the Set: Beginnings, Summary by Regions, Parties and Dedemocratization”, volume 5