Dressler, Robert L. 2016. “The Major Sections or Groups Within Sobralia, With Four New Species from Panama and Costa Rica, S. Crispissima, S. Gloriana, S. Mariannae And S. Nutans”. Lankesteriana: International Journal on Orchidology 2 (3). https://doi.org/10.15517/lank.v2i3.23088.