APA aipamena

Jovanovic, B., & Nyarko, Y. (1995). Research and productivity. National Bureau of Economic Research.

Chicago Style aipamena

Jovanovic, Boyan, and Yaw Nyarko. Research and Productivity. Cambridge: National Bureau of Economic Research, 1995.

MLA aipamena

Jovanovic, Boyan, and Yaw Nyarko. Research and Productivity. National Bureau of Economic Research, 1995.