APA (7 वां संस्करण) प्रशस्ति पत्र

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

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

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

एमएलए (9वां संस्करण) प्रशस्ति पत्र

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