Nakata, Eko, Clara, Andi, Vanness Wilson, Denny kosasih, and Leo Kendrew. 2024. “The Influence of Product Quality and Service Quality on Customer Loyalty at PT. Industri Karet Deli”. Outline Journal of Management and Accounting 3 (2): 59-67. https://doi.org/10.61730/ojma.v3i1.144.