Feldman, R. (1968) "Response to compatriot and foreigner who seek assistance." J. of Personality and Social Psychology10: 202-214
2.
Forbes, G. and H. Gromoll (1971) "The lost-letter technique as a measure of social variables: some exploratory findings." Social Forces50: 113-115.
3.
Gans, H. (1962a) "Urbanism and suburbanism as ways of life: a re-evaluation of definitions," in A Rose (ed.) Human Behavior and Social ProcessesBoston: Houghton Mifflin.
4.
——— (1962b) The Urban Villagers. New York : Free Press.
5.
Glazer, N. and D. Moynihan (1970) Beyond the Melting Pot: The Negroes, Puerto Ricans, Jews, Italians, and Irish of New York City. Cambridge, Mass.: MIT Press.
6.
Goudsblom, J. (1967) Dutch Society. New York: Random House
7.
Hauser, P. (1965) "Application of the ideal-type constructs to the metropolis in the economically less-advanced area," in P. Hauser and L. Schnore (eds.) The Study of Urbanization. New York: John Wiley.
8.
Jacobs, J. (1961) Death and Life of Great American Cities. New York: Random House.
9.
Korte, C. and N. Kerr (1975) "Response to altruistic opportunities under urban and rural conditions." J. of Social Psychology95: 183-184.
10.
Korte, C., I. Ypma, and A. Toppen (1975) "Helpfulness in Dutch society as a function of urbanization and environmental input level." J. of Personality and Social Psychology32: 996-1005.
11.
Langer, E. and R. Abelson (1972) "The semantics of asking a favor: how to succeed in getting help without really dying." J. of Personality and Social Psychology24: 26-32.
12.
Lowin, A., J. Hottes, B. Sandler, and M. Bornstein (1971) "The pace of life and sensitivity to time in urban and rural settings: a preliminary study." J. of Social Psychology83: 247-253.
13.
Milgram, S. (1970) "The experience of living in cities." Science167: 1461-1468.
14.
--- L. Mann, and S. Harter (1965) "The lost-letter technique: a tool of social research ." Public Opinion Q.29: 437-438.
15.
Rosenthal, A. (1964) Thirty-Eight Witnesses. New York: McGraw-Hill.
16.
Simmel, G. (1950) The Sociology of Georg Simmel (Kurt Wolff, ed.)New York: Free Press.
17.
Wirth, L. (1938) "Urbanism as a way of life." Amer. J. of Sociology44: 1-24.