APA ציטוט

Gettell, R. G. (1933). Political science. Boston: Ginn and company.

Trích dẫn kiểu Chicago

Gettell, Raymond Garfield. Political Science. Boston: Ginn and company, 1933.

ציטוט MLA

Gettell, Raymond Garfield. Political Science. Boston: Ginn and company, 1933.