APA-viite

Marshall , A. (1920). Principles of economics (8th ed.). Macmillan.

Chicago-tyylinen lähdeviittaus

Marshall , Alfred. Principles of Economics. 8th ed. London: Macmillan, 1920.

MLA-viite

Marshall , Alfred. Principles of Economics. 8th ed. Macmillan, 1920.