Cita APA

Goldin, C., & Katz, L. F. (1999). The returns to skill in the United States across the twentieth century. National Bureau of Economic Research.

Citación estilo Chicago

Goldin, Claudia, and Lawrence F. Katz. The Returns to Skill in the United States Across the Twentieth Century. Cambridge, Mass: National Bureau of Economic Research, 1999.

Cita MLA

Goldin, Claudia, and Lawrence F. Katz. The Returns to Skill in the United States Across the Twentieth Century. National Bureau of Economic Research, 1999.