Yustianto BP, Syarif A. The Effect of Marketing Mix on Decisions to Purchase Oppo Brand Smartphones at Plaza Simpur Center in Bandar Lampung. Studi Akuntansi, Keuangan dan Manajemen [Internet]. 2024 Sep. 9 [cited 2025 Jul. 13];4(1):169-7. Available from: https://penerbitgoodwood.com/index.php/sakman/article/view/3291