APA (7th ed.) Citation

Lipsey, R. G. (1966). An introduction positive economics (2a. ed.). Weidenfeld and Nicholson.

Chicago Style (17th ed.) Citation

Lipsey, Richard G. An Introduction Positive Economics. 2a. ed. Londres: Weidenfeld and Nicholson, 1966.

MLA (9th ed.) Citation

Lipsey, Richard G. An Introduction Positive Economics. 2a. ed. Weidenfeld and Nicholson, 1966.