1. Josephine Klein, The Study of Groups, London: Routledge andKeegan Paul Ltd., 1956, p. 26Klein26The Study of Groups1956
2. Klein, op. cit., p. 47.47
3. Ralph Linton, The Study of Man, New York: Appleton-Cen-tury, 1936, p. 113.Linton113The Study of Man1936
4. Ibid., p. 114.114