Cahyaningrum, D. A., and B. Budiati. “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, vol. 1, no. 1, Apr. 2025, pp. 17-28, doi:10.59651/tambun.v1i1.287.