Angel, S. (1968). Discouraging crime through city planning. Institute of Urban and Regional Development.
Cita Chicago (17th ed.)Angel, Shlomo. Discouraging Crime Through City Planning. [Berkeley: Institute of Urban and Regional Development, 1968.
Cita MLA (9th ed.)Angel, Shlomo. Discouraging Crime Through City Planning. Institute of Urban and Regional Development, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.