ZIKRI, R.; NATALISA , D. .; MAULANA , A. . The Effect of Product Quality, Price, and Promotions on Gas Purchasing Decisions at PT Pertamina EP Zone 4 Prabumulih. Eduvest - Journal of Universal Studies, [S. l.], v. 6, n. 8, p. 9345–9361, 2026. DOI: 10.59188/eduvest.v6i8.53191. Disponível em: https://eduvest.greenvest.co.id/index.php/edv/article/view/53191. Acesso em: 24 aug. 2026.