Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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