Hatfield, N. J. (1978). Basic market, research techniques for transit systems. U.S. Department of Commerce.
Citação norma ChicagoHatfield, Nancy J. Basic Market, Research Techniques for Transit Systems. Austin: U.S. Department of Commerce, 1978.
Citação norma MLAHatfield, Nancy J. Basic Market, Research Techniques for Transit Systems. U.S. Department of Commerce, 1978.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.