Chaiprasongsuk, M., Mingmuang, M., Thongpan, A., & Namwongprom, K. (2007). Molecular Identification of Encephalartos (Zamiaceae) Species and Their Relationships to Morphological Characters. Agriculture and Natural Resources, 41(1), 43–60. retrieved from https://li01.tci-thaijo.org/index.php/anres/article/view/244180