Irma Br Siregar and Indawati Lestari 2025. THE EFFECT OF PRODUCT QUALITY AND SERVICE QUALITY ON PURCHASING DECISIONS ON CHATIME SETIA BUDI MEDAN. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET). 4, 9 (Jul. 2025), 1081–1088. DOI:https://doi.org/10.54443/ijset.v4i9.790.