Prasad, Mahabir, and Asket Singh. “Odonata of Doon Valley 2. Zygoptera”. Records of the Zoological Survey of India 70, no. 1-4 (December 1, 1976): 121–131. Accessed July 5, 2024. https://recordsofzsi.com/index.php/zsoi/article/view/161969.