Adler, H. A. (1987). Economic appraisal of transport projects: A manual with casestudies (Revised and expanded edition.). Johns Hopkins University Press.
Cita Chicago (17th ed.)Adler, Hans A. Economic Appraisal of Transport Projects: A Manual with Casestudies. Revised and expanded edition. Baltimore: Johns Hopkins University Press, 1987.
Cita MLA (9th ed.)Adler, Hans A. Economic Appraisal of Transport Projects: A Manual with Casestudies. Revised and expanded edition. Johns Hopkins University Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.