1. Bauer, R. A. (Ed.).Social indicators. Cambridge, Mass.: MIT Press, 1966.
2. Cohen, W. J. Social indicators: Statistics of public policy.The American Statistician 1968,22, 14–16.
3. Cronbach, L. Coefficient alpha and the internal structure of tests.Psychometrica, 1951,16, 297–334.
4. Dunham, H. W. Sociocultural studies of schizophrenia.Archives of General Psychiatry, 1971,24, 206, 214.
5. Faris, R. E. L., & Dunham, H. W.Mental disorders in urban areas. Chicago: University of Chicago Press, 1939.