Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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