Herbert, D. T. (1979). Social Problems and the city: Geographical perspectives. O. U. pr..
Cita Chicago (17th ed.)Herbert, David T. Social Problems and the City: Geographical Perspectives. Oxford: O. U. pr., 1979.
Cita MLA (9th ed.)Herbert, David T. Social Problems and the City: Geographical Perspectives. O. U. pr., 1979.
Atenció: Aquestes cites poden no estar 100% correctes.