Herbert, D. T., & Smith, D. M. (1979). Social problems and the city: Geographical perspectives (2nd ed.). Oxford University Press.
Cita Chicago (17th ed.)Herbert, David T., i David Marshall Smith. Social Problems and the City: Geographical Perspectives. 2nd ed. Oxford: Oxford University Press, 1979.
Cita MLA (9th ed.)Herbert, David T., i David Marshall Smith. Social Problems and the City: Geographical Perspectives. 2nd ed. Oxford University Press, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.