Sampson, R. J., & Farris, M. T. (1979). Domestic transportation: Practice, theory, and policy (4th ed.). Houghton Mifflin.
Citazione stile Chigago Style (17a edizione)Sampson, Roy J., e Martin T. Farris. Domestic Transportation: Practice, Theory, and Policy. 4th ed. Boston: Houghton Mifflin, 1979.
Citatione MLA (9a ed.)Sampson, Roy J., e Martin T. Farris. Domestic Transportation: Practice, Theory, and Policy. 4th ed. Houghton Mifflin, 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.