Chaiprasongsuk, M., Mingmuang, M., Thongpan, A. and Namwongprom, K. (2007) “Molecular Identification of Encephalartos (Zamiaceae) Species and Their Relationships to Morphological Characters”, Agriculture and Natural Resources. Bangkok, Thailand, 41(1), pp. 43–60. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/244180 (accessed: 28 August 2026).