21
by Gehlen, Arnold
Published 1988
Columbia University Press

22
by Wollstonecraft, Mary
Published 1799
Printed by James Carey …

23
by Tocqueville, Alexis de
Published 1861
Macmillan and co.

24
by Martineau, Harriet
Published 1975
AMS Press

25
by Durkheim, Émile
Published 1961
Free Press of Glencoe

27
by Kropotkin, Petr Alekseevich
Published 1915
Heinemann

28
by Saint-Simon, Henri
Published 1834
B.D. Cousins and P. Wilson

29
by Morris, William
Published 1890
Roberts brothers

30
by Penty, Arthur J.
Published 1917
G. Allen & Unwin ltd.

31
by Mill, John Stuart
Published 1865
Longmans, Green, and Co.

33
by Merton, Robert King
Published 1965
Free Press

34
by Merton, Robert King
Published 1967
Free Press

35
by Becker, Howard Saul
Published 1963
Free Press of Glencoe

36
by Penty, Arthur J.
Published 1922
G. Allen & Unwin ltd.

37
by Scheler, Max
Published 1980
Routledge & K. Paul

38
by Durkheim, Émile
Published 1958
Free Press

39
by Gilman, Charlotte Perkins
Published 2008
Alexander Street Press

40
by Ward, Lester Frank
Published 1925
Macmillan