Citazione Stile APA (7a Edizione)

Ellsworth, J. W. (1976). Politics and political systems: An introduction to political science. McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Ellsworth, John W. Politics and Political Systems: An Introduction to Political Science. New York: McGraw-Hill, 1976.

Citatione MLA (9a ed.)

Ellsworth, John W. Politics and Political Systems: An Introduction to Political Science. McGraw-Hill, 1976.