KATZENSTEIN, H. (1992). Direct Marketing. Macmillan.
Chicago Style (17th ed.) CitationKATZENSTEIN, Herbert. Direct Marketing. Macmillan, 1992.
MLA引文KATZENSTEIN, Herbert. Direct Marketing. Macmillan, 1992.
警告：這些引文格式不一定是100％准確.
APA引文