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 (Apr. 2025), 17–28. DOI:https://doi.org/10.59651/tambun.v1i1.287.