APA-viite

Wren, M. C. (1968). Course of Russian history. Macmillan.

Chicago-tyylinen lähdeviittaus

Wren, Melvin C. Course of Russian History. London: Macmillan, 1968.

MLA-viite

Wren, Melvin C. Course of Russian History. Macmillan, 1968.