Sodusta, Patrick Jason A., and Jim Cootes. “Validation of Thrixspermum ravanii (Aeridinae, Orchidaceae), a New Species from the Philippines”. Phytotaxa 661, no. 2 (July 30, 2024): 211–212. Accessed December 5, 2025. https://phytotaxa.mapress.com/pt/article/view/phytotaxa.661.2.9.