Hazard, J. L. (1977). Transportation: Management economics policy. Cornell Maritime.
Cita Chicago (17th ed.)Hazard, John L. Transportation: Management Economics Policy. Cambridge: Cornell Maritime, 1977.
Cita MLA (9th ed.)Hazard, John L. Transportation: Management Economics Policy. Cornell Maritime, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.