Cita APA (7a ed.)

Murphy, K. M., Riddell, W. C., & Romer, P. M. (1998). Wages, skills, and technology in the United States and Canada. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Murphy, Kevin M., W. Craig Riddell, y Paul Michael Romer. Wages, Skills, and Technology in the United States and Canada. Cambridge, MA: National Bureau of Economic Research, 1998.

Cita MLA (9a ed.)

Murphy, Kevin M., et al. Wages, Skills, and Technology in the United States and Canada. National Bureau of Economic Research, 1998.