SUSANTO; SASKIA; RINI INDAHWATI. The Influence of Promotional Mix on Decision Making to Purchase Oppo Brand Cell Phones in Medan City. Outline Journal of Economic Studies, [S. l.], v. 1, n. 2, p. 77–89, 2022. DOI: 10.61730/ojes.v1i2.25. Disponível em: https://journal.outlinepublisher.com/index.php/OJES/article/view/25. Acesso em: 14 sep. 2025.