Thomas Sowell, Race and Culture: A World View (New York: Basic Books, 1994), 67.

Sowell, Race and Culture, 25.

Margaret Bridges, Bruce Fuller, Russell Rumberger, and Loan Tran, «Preschool for California’s Children: Unequal Access, Promising Benefits,» PACE Child Development Projects, University of California Linguistic Minority Research Institute (September 2004): 7.