APA (7th ed.) Zitazioa

GETTELL, R. G. (1967). Political science. Ginn.

Chicago Style (17th ed.) Zitazioa

GETTELL, Raymond Gurfield. Political Science. Boston: Ginn, 1967.

MLA (9th ed.) Zitazioa

GETTELL, Raymond Gurfield. Political Science. Ginn, 1967.