APA-viite

Morrall, J. B. (1971). Political thought in medieval times (3rd ed.). Hutchinson.

Chicago-tyylinen lähdeviittaus

Morrall, John B. Political Thought in Medieval Times. 3rd ed. London: Hutchinson, 1971.

MLA-viite

Morrall, John B. Political Thought in Medieval Times. 3rd ed. Hutchinson, 1971.