Cita APA (7th ed.)

Cole, G. D. H. (1927). The economic system: An elementary outline. Longmans, Green.

Cita Chicago (17th ed.)

Cole, G. D. H. The Economic System: An Elementary Outline. London: Longmans, Green, 1927.

Cita MLA (8th ed.)

Cole, G. D. H. The Economic System: An Elementary Outline. Longmans, Green, 1927.