Fryer, R. G. J., & Levitt, S. D. (2006). Testing for racial differences in the mental ability of young children. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Fryer, Roland G. Jr., und Steven D. Levitt. Testing for Racial Differences in the Mental Ability of Young Children. Cambridge, Mass: National Bureau of Economic Research, 2006.
MLA-Zitierstil (9. Ausg.)Fryer, Roland G. Jr., und Steven D. Levitt. Testing for Racial Differences in the Mental Ability of Young Children. National Bureau of Economic Research, 2006.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.