Hughes, E. A., & Stuenkel, F. (1929). The social service exchange in Chicago. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Hughes, Elizabeth A., agus Francelia Stuenkel. The Social Service Exchange in Chicago. Chicago, Ill.: University of Chicago Press, 1929.
Lua MLA (8ú heag.)Hughes, Elizabeth A., agus Francelia Stuenkel. The Social Service Exchange in Chicago. University of Chicago Press, 1929.
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