1. See e. g. Morton Deutsch , "Field Theory in Social Psychology" in Gardner Lindzey (ed.). Handbook of Social Psychology, Cambridge, Mass.: Addison-Wesley, 1954, Pp. 208-209.
2. Agne Lundquist, Anpassning i hem och samhälle, Stockholm: dissertation 1955. Pp. 185 -186.
3. George C. Homans, The Human Group, New York: Harcuurt, Brace and Company, 1950. Pp. 185-186.
4. William H. Whyte, JrIs Anybody Listening? New York: Simon and Schuster, 1952; an implication in this direction may be seen in Ch. 4, e. g. p. 75. Another writer says that the mass production of comic books "is a serious danger to the production of good inexpensive children's books". Fredric Wertham, "The Comics . Very Funny!", reprinted from Saturday Review of Literature in Alfred McClung Lee and Elizabeth Briant (eds.), Social Problems in America, New York: Henry Holt and Company, 1949. Pp. 419-420.
5. See e. g. Enk Allardt , "Drinking Noims and Drinking Habits", in Drinking and Drinkers, Helsinki: The Finnish Foundation for Alcohol Studies, 1957. Pp. 76-77. Also Touko A. Markkanen, On the Sociological Theory of Alcohol in Terms of the Unified Factor-Analysis Model, Helsinki: The Finnish Foundation for Alcohol Studies, 1958.