EVALUATION OF THE DHARMASRAYA-PADANG ROUTE TARIFFS ON TPN TRAVEL USING THE COST OF GOODS SOLD (COGS), ABILLITY TO PAY (ATP), AND WILLINGNESS TO PAY (WTP) METHODS. JESOCIN [Internet]. 2024 Aug. 3 [cited 2026 Oct. 24];1(9):29-37. Available from: http://jesocin.com/index.php/jesocin/article/view/38