Cita APA

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

Citación estilo Chicago

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

Cita MLA

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