Black, A. (1995). Urban mass transportation planning. McGraw-Hill.
Dyfyniad Arddull ChicagoBlack, Alan. Urban Mass Transportation Planning. New York: McGraw-Hill, 1995.
Dyfyniad MLABlack, Alan. Urban Mass Transportation Planning. McGraw-Hill, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.