Sin Yeng, W., and P. C. Boyce. “Studies on Schismatoglottideae (Araceae) of Borneo LXXIII - Schismatoglottis Auyongii [Calyptrata Clade], a New Species for the Penrissen Range, Sarawak”. Webbia, Vol. 77, no. 1, Apr. 2022, pp. 153-7, doi:10.36253/jopt-12256.