Pongthornpruek, S., Pampasit, S., Promtep, K., & Nabheerong, P. (2017). The diversity of pteridophytes along a natural trial at Phu Soi Dao national park, Phitsanulok province, Thailand. Asia-Pacific Journal of Science and Technology, 13(8), 895–905. retrieved from https://so01.tci-thaijo.org/index.php/APST/article/view/83554