Naive, M. A. K., Dalisay, J. A. G. P. and Bangcaya, P. S. (2020) “<i>Cymbidium sigmoideum</i> (Orchidaceae), a new addition to the Flora of the Philippines”, Lankesteriana: International Journal on Orchidology, 20(2), pp. 217–220. doi: 10.15517/lank.v20i2.43211.