Quang, Bui Hong, Nguyen Sinh Khang, Tran Duc Binh, Tran Thi Ngoc Diep, and Hoang Thi Kim Lien. “Nomenclatural Notes and Typification of <em>Ophiorrhiza tonkinensis< Em> Pit. (Rubiaceae), an Endemic Species from Northern Vietnam”. Academia Journal of Biology 47, no. 2 (June 23, 2025): 101–106. Accessed September 30, 2025. https://ajb.vast.vn/vjbio/article/view/20512.