Samudro, Andreas, Ujang Sumarwan, Megawati Simanjuntak, and Eva Z Yusuf. “Building the Relationship Quality Model: An Investigation of the Chemical Industry”. MIX: JURNAL ILMIAH MANAJEMEN 9, no. 3 (October 30, 2019): 528–543. Accessed June 3, 2026. https://publikasi.mercubuana.ac.id/index.php/Jurnal_Mix/article/view/6850.