Frye, R. W. (1973). Introduction to the marketing system. Comfield press, 1973.
Čikaški stil citiranjaFrye, Robert W. Introduction to the Marketing System. Francisco: Comfield press, 1973, 1973.
MLA način citiranjaFrye, Robert W. Introduction to the Marketing System. Comfield press, 1973, 1973.
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