Little, A. D. (1966). Transportation predictive procedures: Highway travel. Michigan: Department of Commerse.
Παραπομπή Chicago StyleLittle, Arthur D. Transportation Predictive Procedures: Highway Travel. Michigan: Department of Commerse, 1966.
Παραπομπή MLALittle, Arthur D. Transportation Predictive Procedures: Highway Travel. Michigan: Department of Commerse, 1966.
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