Pongsathornwiwat, Akkaranan, Jarungrat Wannasit, and Chawalit Jeenanunta. 2019. “A 2-Tuple Linguistic Decision Model for Multi-Criteria Decision-Making Problem Case Study of Selecting Logistic Service Provider in the Bakery Industry”. Journal of Applied Statistics and Information Technology 4 (2):31-45. https://ph02.tci-thaijo.org/index.php/asit-journal/article/view/223764.