KATZENSTEIN, H. (1992). Direct Marketing. Macmillan.
Chicago Style (17th ed.) CitationKATZENSTEIN, Herbert. Direct Marketing. Macmillan, 1992.
MLA citiranjeKATZENSTEIN, Herbert. Direct Marketing. Macmillan, 1992.
Opozorilo: Ti citati niso vedno 100% točni.