Harper, D. V. (1959). Economic regulation of the motor trucking industry by the States. University of Illinois Press.
Chicago-viite (17. p.)Harper, Donald Victor. Economic Regulation of the Motor Trucking Industry by the States. Urbana, Ill: University of Illinois Press, 1959.
MLA-viite (9. p.)Harper, Donald Victor. Economic Regulation of the Motor Trucking Industry by the States. University of Illinois Press, 1959.
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