Sampson, R. J., & Farris, M. T. (1966). Domestic transportation: Practice, theory and policy. Boston: Houghton Mifflin.
Παραπομπή Chicago StyleSampson, Roy J., and Martin T. Farris. Domestic Transportation: Practice, Theory and Policy. Boston: Houghton Mifflin, 1966.
Παραπομπή MLASampson, Roy J., and Martin T. Farris. Domestic Transportation: Practice, Theory and Policy. Boston: Houghton Mifflin, 1966.
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