Aser, C. M. A., H. P. Lumista, C. R. M. Lituañas, and F. M. Acma. “Morphology and Nodal Anatomy of Philippine Endemic Hornstedtia conoidea Ridl. (Zingiberaceae)”. The Thailand Natural History Museum Journal, vol. 16, no. 2, Dec. 2022, pp. 49-57, https://li05.tci-thaijo.org/index.php/thnhmj/article/view/1887.