Παραπομπή σε μορφή APA (7η εκδ.)

Harwood, E. C. (1957). Cause and control of the business cycle (5th ed.). American Institute for Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Harwood, Edward Crosby. Cause and Control of the Business Cycle. 5th ed. Great Barrington, Mass.: American Institute for Economic Research, 1957.

Παραπομπή σε μορφή MLA (8th εκδ.)

Harwood, Edward Crosby. Cause and Control of the Business Cycle. 5th ed. American Institute for Economic Research, 1957.