Walker, G. (1947). Road and rail: An enquiry into the economics of competition and state control (Rev., 2. ed.). Allen and Unwin.
Chicago-Zitierstil (17. Ausg.)Walker, Gilbert. Road and Rail: An Enquiry into the Economics of Competition and State Control. Rev., 2. ed. London: Allen and Unwin, 1947.
MLA-Zitierstil (9. Ausg.)Walker, Gilbert. Road and Rail: An Enquiry into the Economics of Competition and State Control. Rev., 2. ed. Allen and Unwin, 1947.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.