1. Classification and Phylogeny in the Orchidacea
2. Orchid inventory in Bantimurung-Bulusaraung National Park, South Sulawesi, Indonesia
3. Inventory and exploration of orchid in Polewali Mandar, West Sulawesi, Indonesia
4. R. Govaerts, “WCSP: World checklist of selected plant families,” in Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist, edited by Y. Roskov, G. Ower, T. Orrell, D. Nicolson, N. Bailly, P. M. Kirk, T. Bourgoin, R. E. DeWalt, W. Decock, E. van Nieukerken, J. Zarucchi, and L. Penev (Naturalis, Leiden, 2019).
5. Field notes: terrestrial orchids in the Lappadata Forest, Bone, South Sulawesi