Haryadi R, Widiyanti M, Shihab MS, Maulana A. The effect of product quality on coal purchase interest through sales-based non-KAI logistics at PT Bukit Asam, TBK. Int. j. bus. econ. manag. (Lond.) [Internet]. 2024Nov.2 [cited 2026Apr.16];7(4):168-75. Available from: https://sloap.org/journal/index.php/ijbem/article/view/2326