Levine, D.N. (1979) `Simmel at a Distance: On the History and Systematics of the Sociology of the Stranger', pp. 21-36 in William Shack and Elliott Skinner (eds), Strangers in African Societies. Berkeley: University of California Press.
2.
Park, R.E. and E.W. Burgess (1924) Introduction to the Science of Sociology. Chicago: University of Chicago Press.
3.
Schutz, A. (1944) `The Stranger: An Essay in Social Psychology', American Journal of Sociology49(6): 499-507.
4.
Simmel, G. (1971) `The Stranger', pp. 143-149 in Donald N. Levine (ed.), On Individuality and Social Forms. Chicago: University of Chicago Press.
