Permatasari, E., Savitri, C. and Faddila , S. P. (2022) “EFFECTIVENESS OF ONE DAY PROMO IN INCREASING SALES OF NPK FERTILIZER PRODUCTS 30-6-8 IN PT. XYZ”, Jurnal Mantik, 6(1), pp. 771-776. Available at: https://iocscience.org/ejournal/index.php/mantik/article/view/2371 (Accessed: 12May2026).