“Pengaruh Kualitas Produk, Harga, Relationship Marketing Terhadap Keputusan Pembelian Produk Di PT Asaba Pekanbaru ”. Management Studies and Entrepreneurship Journal (MSEJ), vol. 1, no. 1, Feb. 2020, pp. 64-77, https://doi.org/10.37385/msej.v1i1.49.