Singh, Munnu. “Influence of Spacing and Intercropping on Biomass and Essential Oil Yield of Patchouli [Pogostemon Cablin (Blanco) Benth.]”. Journal of Spices and Aromatic Crops 17, no. 3 (December 26, 2008): 235–239. Accessed October 5, 2025. https://www.updatepublishing.com/journal/index.php/josac/article/view/4927.