Stone, B. (1986). Successful direct marketing methods/3e (3rd ed.). Crain books.
Chicago Stili AlıntıStone, Bob. Successful Direct Marketing Methods/3e. 3rd ed. Crain books, 1986.
MLA AlıntıStone, Bob. Successful Direct Marketing Methods/3e. 3rd ed. Crain books, 1986.
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