Simmel, G., & Wolff, K. H. (1964). The sociology of Georg Simmel (1st Free Press pbk. ed.). Free Press of Glencoe.
Cita Chicago Style (17a ed.)Simmel, Georg, y Kurt H. Wolff. The Sociology of Georg Simmel. 1st Free Press pbk. ed. New York: Free Press of Glencoe, 1964.
Cita MLA (9a ed.)Simmel, Georg, y Kurt H. Wolff. The Sociology of Georg Simmel. 1st Free Press pbk. ed. Free Press of Glencoe, 1964.
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