syafrirewa muhammadsyafri. The Mediating Effect of Production Costs On The Relationship Between Coffee Selling Prices in Enrekang Regency. ecotal [Internet]. 2023 Aug. 2 [cited 2026 Jun. 10];4(2):114-29. Available from: https://ojs.stieamkop.ac.id/index.php/ecotal/article/view/594