Setiawan, O., Simorangkir, E. S. ., Purwati, A. A., & Purwati, A. A. (2020). Pengaruh Kualitas Produk, Harga, Relationship Marketing terhadap Keputusan Pembelian Produk di PT Asaba Pekanbaru . Management Studies and Entrepreneurship Journal (MSEJ), 1(1), 64–77. https://doi.org/10.37385/msej.v1i1.49