Cita APA

Lipsey, R. G. (1983). Introduction to positive economics (4th ed.). ELBS.

Chicago Edition Citation

Lipsey, Richard G. Introduction to Positive Economics. 4th ed. ELBS, 1983.

Cita MLA

Lipsey, Richard G. Introduction to Positive Economics. 4th ed. ELBS, 1983.

Atenció: Aquestes cites poden no estar 100% correctes.