एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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