Cita APA (7a ed.)

Lipsey, R. G. (1966). An introduction to positive economics ([2nd ed.].). Weidenfeld & Nicolson.

Cita Chicago Style (17a ed.)

Lipsey, Richard G. An Introduction to Positive Economics. [2nd ed.]. London: Weidenfeld & Nicolson, 1966.

Cita MLA (9a ed.)

Lipsey, Richard G. An Introduction to Positive Economics. [2nd ed.]. Weidenfeld & Nicolson, 1966.