bumrungphon pennapha, Mungthanee T, Toadithep T. Informal debt: the operations and relationships between debtors and creditors of entrepreneurs at Bangsaen Beach. J.IBA [internet]. 2023 Dec. 30 [cited 2026 Sep. 12];5(2):1-15. available from: https://so03.tci-thaijo.org/index.php/iba/article/view/270433