Cita APA (7th ed.)

Roskin, M. (1997). Political science: An introduction (6th ed.). Prentice Hall.

Cita Chicago (17th ed.)

Roskin, Michael. Political Science: An Introduction. 6th ed. Upper Saddle River, N.J: Prentice Hall, 1997.

Cita MLA (9th ed.)

Roskin, Michael. Political Science: An Introduction. 6th ed. Prentice Hall, 1997.