Naithani, H. B., J. D. S. Negi, R. C. Thapliyal, and T. C. Pokhriyal. “Valley of Flowers: Need for Conservation or Preservation”. Indian Forester 118, no. 5 (May 1, 1992): 371–378. Accessed December 26, 2025. https://indianforester.co.in/index.php/indianforester/article/view/8438.