APA aipamena

Lipsey, R. G. (1995). Introduction to positive economics (8th ed.). ELBS.

Chicago Style aipamena

Lipsey, Richard G. Introduction to Positive Economics. 8th ed. Britain: ELBS, 1995.

MLA aipamena

Lipsey, Richard G. Introduction to Positive Economics. 8th ed. ELBS, 1995.