WATKINS CHARLEY. (2002). MARKETING SALES AND CUSTOMER SERVICES. AITBS PUBLICATION.
Chicago Style (17. basım) AtıfWATKINS CHARLEY. MARKETING SALES AND CUSTOMER SERVICES. NEW DELHI: AITBS PUBLICATION, 2002.
MLA (9th ed.) AtıfWATKINS CHARLEY. MARKETING SALES AND CUSTOMER SERVICES. AITBS PUBLICATION, 2002.
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