Harper, D. V. (1959). Economic regulation of the motor trucking industry by the States. University of Illinois Press.
Chicago-referens (17:e uppl.)Harper, Donald Victor. Economic Regulation of the Motor Trucking Industry by the States. Urbana, Ill: University of Illinois Press, 1959.
MLA-referens (9:e uppl.)Harper, Donald Victor. Economic Regulation of the Motor Trucking Industry by the States. University of Illinois Press, 1959.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.