Walker, P. A. (1973). Community attitudes to transportation stystems.
Dyfyniad Arddull ChicagoWalker, Paul Anthony. Community Attitudes to Transportation Stystems. 1973.
Dyfyniad MLAWalker, Paul Anthony. Community Attitudes to Transportation Stystems. 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.