[24] Lindeman, p. 115.
[25] Singer, p. 10.
[26] Lindeman, p. 170.
[27] MacDougall: Group Mind, p. 78.
[28] MacDougall: Group Mind, p. 158.
[29] Dennes: Method and Presuppositions of Group Psychology, p. 120.
[30] Barker: Political Thought in England from Herbert Spencer to the Present Day.
[31] Singer: Mind as Behavior, chapter on The Man Without a Fellow.
[32] Baldwin: Social and Ethical Interpretations, p. 22.
[33] p. 30.