Herring, J. M. (1929). The problem of weak railroads: Their relation to an adequate transportation system. Univ. of Pennsylvania Press.
Chicago-Zitierstil (17. Ausg.)Herring, James Morton. The Problem of Weak Railroads: Their Relation to an Adequate Transportation System. Philadelphia: Univ. of Pennsylvania Press, 1929.
MLA-Zitierstil (9. Ausg.)Herring, James Morton. The Problem of Weak Railroads: Their Relation to an Adequate Transportation System. Univ. of Pennsylvania Press, 1929.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.