Penpong MS, Rodsisen R, Kaewpichai P. STUDY OF TOURISTS’ WILLINGNESS TO PAY FOR THE DEVELOPMENT OF GREEN LOGISTICS PUBLIC TRANSPORT SYSTEM ON KOH SAMUI. JSC [internet]. 2025 Aug. 29 [cited 2026 Oct. 6];9(8):313-27. available from: https://so06.tci-thaijo.org/index.php/JSC/article/view/287041