Cita APA

Lipsey, R. G. (1999). Principles of economics (9th ed.). Oxford university Press.

Citación estilo Chicago

Lipsey, Richard G. Principles of Economics. 9th ed. New Delhi: Oxford university Press, 1999.

Cita MLA

Lipsey, Richard G. Principles of Economics. 9th ed. Oxford university Press, 1999.