มธุรสมนตรี ชลิตต์. “A Development of Neem Oil Pressing Machine Using a Single Screw to Study a Suitable Production Condition”. Journal of Engineering, RMUTT 5 (June 30, 2005): 6–12. Accessed May 10, 2024. https://ph01.tci-thaijo.org/index.php/jermutt/article/view/242320.