Saisook J, Koonthong P, Kotmongkon T. Group of Coffee Farmer’s Development Process in Ubon Ratchathani Province and Design Packaging to Promote Sales. J.HMS.SSKRU [internet]. 2024 Jun. 28 [cited 2025 Aug. 5];8(1):137-54. available from: https://so08.tci-thaijo.org/index.php/jhuso/article/view/3024