Citazione Stile APA (7a Edizione)

GETTLELL, R. G. History of political thought, ;. Allen & Unwin.

Citazione stile Chigago Style (17a edizione)

GETTLELL, Raymond Garfield. History of Political Thought, ;. London: Allen & Unwin.

Citatione MLA (9a ed.)

GETTLELL, Raymond Garfield. History of Political Thought, ;. Allen & Unwin.