1. Aberbach, J. and Walker, J., Race in the City: Political Trust and Public Policy in the New Urban System, Little, Brown, Boston, 1973.
2. Allport, F. H. and Vernon, P. E., A Study of Values, Houghton-Mifflin, Boston, 1931.
3. Andrews, F. M., Morgan, J. N., and Sonquist, J. A., Multiple Classification Analysis, Institute for Social Research, Ann Arbor, Mich., 1967.
4. Bachman, J. G., Kahn, R. L., Mednick, M. T., Davidson, T. N., and Johnston, L. D., Youth in Transition, Vol. I, Institute for Social Research, Ann Arbor, Mich., 1967.
5. Blumenthal, M. D., Kahn, R. L., Andrews, F. M., and Head, K. B., Justifying Violence: Attitudes of American Men, Institute for Social Research, Ann Arbor, Mich., 1972.