Hidayat , R., and L. Indayani. “Product Design and Quality As Determinants of Oppo Purchase Decisions: Desain Produk Dan Kualitas Sebagai Faktor Penentu Keputusan Pembelian Oppo”. Indonesian Journal of Law and Economics Review, vol. 20, no. 4, Oct. 2025, p. 10.21070/ijler.v20i4.1345, doi:10.21070/ijler.v20i4.1345.