Cita APA

Lipsey, R. G. (1971). An introduction to positive economics. ELBS.

Citación estilo Chicago

Lipsey, Richard G. An Introduction to Positive Economics. London: ELBS, 1971.

Cita MLA

Lipsey, Richard G. An Introduction to Positive Economics. ELBS, 1971.

Warning: These citations may not always be 100% accurate.