Chanmuang, Napaphach, Chatchawan Rattanapan, and Paemika Saetiaw. “Community Product from Rubber Processing Materials in Phipun District, Nakhon Si Thammarat Province”. Area Based Development Research Journal 10, no. 5 (November 1, 2018): 351–364. Accessed April 26, 2024. https://so01.tci-thaijo.org/index.php/abcjournal/article/view/153176.