Somprasong, Winai, Parikarn Surppanpichit, and Pranai Penchit. “Studies and Collection of Ferns and Their Allies in the Phu Wiang National Park, Khon Kaen Province”. Thai Agricultural Research Journal 22, no. 2 (August 28, 2004): 96–109. accessed October 1, 2026. https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/212358.