1. ARYA, D., D. BHATT, K. RAVI, L.M. TEWARI, K. KAMAL AND G.C. JOSHI 2013. Studies on natural resources, trade and conservation of Kutki (Picrorhiza kurroa Royle ex Benth. Scrophulariaceae) from Kumaun Himalaya. Scientific Research and Essays 8(14): 575–580.
2. BISHT, V.K., A.S. KATHAIT, J.S. NEGI, A.K. BHANDARI AND C.S. RANA 2011. Development of Market Supply chain for Picrorhiza kurroa and Saussurea costus in the district Chamoli of the Uttarakhand state, India: a case study. Report and Opinion 3(5); 14–17.
3. BORAH, D. AND R.K. SINGH 2021. New record of Neopicrorhiza minima R.R. Mill (Plantaginaceae) to the flora of India. Mongolian Journal of Biological Sciences. 19(1): 55–58.
4. IUCN 2021 https://www.iucnredlist.org/species/88304131/ 88304135.
5. KATOCH, M., I.S. FAZIL, K.A. SURI, J. AHUJA AND J.N. OAZI 2011. Effect of altitude on Picroside content in core collections of Picrorhiza kurroa from the north western Himalayas. Journal of Natural Medicine 65: 578–582.