Sriyot, M. and Khongsuk, S. (2022) “The Construction of 20-liter Plastic Water Bottle Cleaner”, Institute of Vocational Education Southern Region 3 Journal (KRIS Journal). Songkhla, Thailand, 2(2), pp. 67–78. available at: https://so08.tci-thaijo.org/index.php/KRIS/article/view/3232 (accessed: 26 June 2025).