Bowersox, D. J., Calabro, P. J., & Wagenheim, G. D. (1981). Introduction to Transportation. Macmillan Publishing Co., Inc.
Tohutoru Kātū Chicago (17th ed.)Bowersox, Donald J., Pat J. Calabro, me George D. Wagenheim. Introduction to Transportation. New York: Macmillan Publishing Co., Inc, 1981.
Tohutoro MLA (9th ed.)Bowersox, Donald J., et al. Introduction to Transportation. Macmillan Publishing Co., Inc, 1981.
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