Sahiti, M., and B. M. Gurupadayya. “Method Development and Validation for the Estimation of Valerenic Acid Content in Valerian Tablets Using RP-HPLC Method”. South Asian Research Journal of Natural Products 2, no. 3 (October 3, 2019): 1-9. Accessed January 26, 2022. https://journalsarjnp.com/index.php/SARJNP/article/view/30087.