Tamang, Sapan, Manjil Gupta, and Kishore Kumar Thapa. “Cinchona Plantation in Darjeeling Hills:History and Extension”. Indian Science Cruiser 33, no. 6 (November 1, 2019): 57–60. Accessed June 16, 2024. http://informaticsjournals.com/index.php/ISC/article/view/38189.