Schwab, W. A. (1992). The sociology of cities. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Schwab, William A. The Sociology of Cities. Englewood Cliffs, N.J: Prentice Hall, 1992.
Lua MLA (9ú heag.)Schwab, William A. The Sociology of Cities. Prentice Hall, 1992.
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