Citazione Stile APA (7a Edizione)

Lipsey, R. (1986). An intro to positive economics (6th.). ELBS.

Citazione stile Chigago Style (17a edizione)

Lipsey, Richard. An Intro to Positive Economics. 6th. London: ELBS, 1986.

Citatione MLA (9a ed.)

Lipsey, Richard. An Intro to Positive Economics. 6th. ELBS, 1986.