Cita APA

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

Citación estilo Chicago

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

Cita MLA

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