REMASHREE, P N RAVINDRAN, A B. “Anatomy of Piper Colubrinum Link”. Journal of Spices and Aromatic Crops 7, no. 2 (December 23, 1998): 111–123. Accessed October 5, 2025. https://www.updatepublishing.com/journal/index.php/josac/article/view/4716.