Zikri, R., Natalisa , D. ., & Maulana , A. . (2026). The Effect of Product Quality, Price, and Promotions on Gas Purchasing Decisions at PT Pertamina EP Zone 4 Prabumulih. Eduvest - Journal of Universal Studies, 6(8), 9345–9361. https://doi.org/10.59188/eduvest.v6i8.53191