Citazione Stile APA (7a Edizione)

Lipsey, R. G. (1989). An introduction to positive economics (7th ed.). Weidenfeld and Nicolson.

Citazione stile Chigago Style (17a edizione)

Lipsey, Richard G. An Introduction to Positive Economics. 7th ed. London: Weidenfeld and Nicolson, 1989.

Citatione MLA (8a ed.)

Lipsey, Richard G. An Introduction to Positive Economics. 7th ed. Weidenfeld and Nicolson, 1989.