“EXPRESSIONS THAT CREATES CONFUSION AMONG THE ELEMENTS OF PROMOTION MIX: SALES PROMOTION” (2018) ҚазҰУ хабаршысы. Экономика сериясы, 123(1), pp. 31–37. Available at: https://be.kaznu.kz/index.php/math/article/view/1942 (Accessed: 31 October 2026).