Cita APA (7th ed.)

Gettell, R. G. (2002). Political Science. The World Press Private Ltd.

Cita Chicago (17th ed.)

Gettell, R. G. Political Science. Calcutta: The World Press Private Ltd, 2002.

Cita MLA (9th ed.)

Gettell, R. G. Political Science. The World Press Private Ltd, 2002.