Cita APA (7th ed.)

Lipsey, R. G. (1995). Int to Positive economics (1st edition.). ELBS.

Cita Chicago (17th ed.)

Lipsey, Richard G. Int to Positive Economics. 1st edition. Oxford: ELBS, 1995.

Cita MLA (9th ed.)

Lipsey, Richard G. Int to Positive Economics. 1st edition. ELBS, 1995.