Παραπομπή σε μορφή APA (7η εκδ.)

Cooper, R., & Johri, A. (1999). Learning by doing and aggregate fluctuations. National Bureau of Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Cooper, Russell, και Alok Johri. Learning by Doing and Aggregate Fluctuations. Cambridge: National Bureau of Economic Research, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

Cooper, Russell, και Alok Johri. Learning by Doing and Aggregate Fluctuations. National Bureau of Economic Research, 1999.