Roszner, E. S., Ledyard, J. O., & Neuman, D. L. (1971). The impact of rapid transit: An evaluation of the proposed Allegheny County Transit Expressway Revenue Line. NTIS.
Dyfyniad Arddull ChicagoRoszner, Ervin S., John O. Ledyard, and Donald L. Neuman. The Impact of Rapid Transit: An Evaluation of the Proposed Allegheny County Transit Expressway Revenue Line. Springfield, Va.: NTIS, 1971.
Dyfyniad MLARoszner, Ervin S., et al. The Impact of Rapid Transit: An Evaluation of the Proposed Allegheny County Transit Expressway Revenue Line. NTIS, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.