Cita APA

Ashenfelter, O., & Rouse, C. (1999). Schooling, intelligence, and income in America: Cracks in the bell curve. National Bureau of Economic Research.

Citación estilo Chicago

Ashenfelter, Orley, and Cecilia Rouse. Schooling, Intelligence, and Income in America: Cracks in the Bell Curve. Cambridge: National Bureau of Economic Research, 1999.

Cita MLA

Ashenfelter, Orley, and Cecilia Rouse. Schooling, Intelligence, and Income in America: Cracks in the Bell Curve. National Bureau of Economic Research, 1999.