Cita APA (7a ed.)

Leamer, E. E., & Thornberg, C. F. (1998). Efforts and wages: A new look at the inter-industry wage differentials. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Leamer, Edward E., y Christopher Frederick Thornberg. Efforts and Wages: A New Look at the Inter-industry Wage Differentials. Cambridge, MA: National Bureau of Economic Research, 1998.

Cita MLA (9a ed.)

Leamer, Edward E., y Christopher Frederick Thornberg. Efforts and Wages: A New Look at the Inter-industry Wage Differentials. National Bureau of Economic Research, 1998.