Chaiprasongsuk, Minta, Mingkwan Mingmuang, Amara Thongpan, and Kamolpun Namwongprom. “Molecular Identification of Encephalartos (Zamiaceae) Species and Their Relationships to Morphological Characters”. Agriculture and Natural Resources 41, no. 1 (March 30, 2007): 43–60. accessed August 28, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/244180.