Cita APA (7th ed.)

Lipsey, R. G., & Steiner, P. O. (1981). Economics (6th ed.). Harper Row.

Cita Chicago (17th ed.)

Lipsey, Richard G., i Peter Otto Steiner. Economics. 6th ed. New York: Harper Row, 1981.

Cita MLA (9th ed.)

Lipsey, Richard G., i Peter Otto Steiner. Economics. 6th ed. Harper Row, 1981.