Julian Cummins. (1994). Sales promotion: How to create and implement campaigns that really work. Universal book.
シカゴスタイル引用形Julian Cummins. Sales Promotion: How to Create and Implement Campaigns That Really Work. New Delhi: Universal book, 1994.
MLA引用形式Julian Cummins. Sales Promotion: How to Create and Implement Campaigns That Really Work. Universal book, 1994.
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