APA aipamena

Bils, M., & Klenow, P. J. (2000). Quantifying quality growth. National Bureau of Economic Research.

Chicago Style aipamena

Bils, Mark, and Peter J. Klenow. Quantifying Quality Growth. Cambridge: National Bureau of Economic Research, 2000.

MLA aipamena

Bils, Mark, and Peter J. Klenow. Quantifying Quality Growth. National Bureau of Economic Research, 2000.