Cahyaningrum, D. A. and Budiati, B. (2025) “Influence of product quality, price perception, and promotion on purchasing decisions for Samsung smartphones (study at CM Cellular Counter Mranggen Demak)”, TAMBUN – Theory and Application in Management, Business, and the Unity of Nations, 1(1), pp. 17–28. doi: 10.59651/tambun.v1i1.287.