Roth, P. L., Bevier, C. A., Bobko, P., Switzer, F. S., & Tyler, P. (2001). Ethnic group differences in cognitive ability in employment and educational settings: A meta-analysis. Personnel Psychology, 54(2), 297–330.

Rushton, J. P., & Jensen, A. R. (2005). Thirty years of research on race differences in cognitive ability. Psychology, Public Policy, and Law, 11(2), 235–294.

Neisser, U., et al. (1996). Intelligence: Knowns and unknowns. (APA Task Force report). American Psychologist, 51(2), 77–101.