Black, J. (1981). Urban transport planning: Theory and practice. John Hopkins University.
Cita Chicago Style (17a ed.)Black, John. Urban Transport Planning: Theory and Practice. Baltimore: John Hopkins University, 1981.
Cita MLA (9a ed.)Black, John. Urban Transport Planning: Theory and Practice. John Hopkins University, 1981.
Precaución: Estas citas no son 100% exactas.