Ratwatthananon, Atcharee, Thitaree Yooboon, Vasakorn Bullangpoti, and Wanchai Pluempanupat. “Insecticidal activity of Piper retrofractum fruit extracts and isolated compounds against Spodoptera litura”. Agriculture and Natural Resources 54, no. 4 (August 31, 2020): 447–452. accessed March 31, 2025. https://li01.tci-thaijo.org/index.php/anres/article/view/247965.