CUMMINGS, T. G. (2004). Sales promotion: Menciptakan, mengimplementasikan, dan mengintegrasikan program promosi penjualan. PPM.
Chicago Style (17th ed.) CitationCUMMINGS, Thomas G. Sales Promotion: Menciptakan, Mengimplementasikan, Dan Mengintegrasikan Program Promosi Penjualan. PPM, 2004.
MLA (8th ed.) CitationCUMMINGS, Thomas G. Sales Promotion: Menciptakan, Mengimplementasikan, Dan Mengintegrasikan Program Promosi Penjualan. PPM, 2004.
Warning: These citations may not always be 100% accurate.