Fischer, Sarah C.: "Relationships in attitudes, opinions and values among family members ." University of California Publications in Culture and Society, Vol. II, No. 2, pp. 29-100. Berkeley and Los Angeles: University of California Press. 1948.
2.
Foote, Nelson N., and Cottrel, Leonard S., Jr.: Identity and Interpersonal Competence . Chicago: University of Chicago Press, 1955.
3.
Fromm, Erich:The Art of Loving. New York: Harper , 1956.
4.
Fromm, Erich: Man for Himself. New York: Rheinhart & Co. Inc., 1947.
5.
Jansen, Luther T.: "Measuring family solidarity." Amer. soc. Rev., 1952, 17, 6.
6.
Maslow, Abraham H.: Motivation and Personality. New York: Harper, 1954.
7.
Moreno, J.L.: Who Shall Survive? Nervous and Mental Disease Publishing Co., 1934.
8.
Murphy, Gardner:Human Potentialities. New York: Basic Books Inc., 1961.
9.
Neiman, L.D., and Hughes, J.W.: "The problem of the concept of a rôle: a re-survey of the literature ." Social Forces, 1951, 30, 2.
10.
Otto, Herbert A.: "What is a strong family?" Marriage Fam. Living, February 1962, 24, 1.
