Biddle, B. J., & Thomas, E. J.Role theory: Concepts and research. New York: John Wiley, 1966.
2.
Carlson, J. D.Clarification of the role of the teacher of the elementary educable mentally retarded child. Unpublished doctoral dissertation. University of Oregon, 1969.
3.
Daniels, M. J.Relational status and the role concept. Pacific Sociological Review, 1959, 2, 41–48.
4.
Leik, R. K.A measure of ordinal consensus. Pacific Sociological Review, 1966, 9, 85–90.
5.
Myers, R. L.Clarification of the role of the teacher of the elementary educable mentally retarded child. Unpublished doctoral dissertation. University of Oregon, 1969.
6.
Newcomb, T. M.Social psychology. New York: Dryden Press, 1950.
7.
Parsons, T.The social system. Glencoe, III.: Free Press, 1951.
8.
Thompson, V. A.Modern organizations: A general theory. New York: Alfred A. Knopf, 1961.
9.
Turner, R. H.Role-taking, role standpoint, and reference-group behavior. American Journal of Sociology, 1955, 61, 316–328.