Verma, S. K., S. K. Sharma, Charan Singh, and H. Mehta. “Breeding, Improvement and Germplasm Conservation of Medicinal and Aromatic Plants - a Review”. Indian Forester 130, no. 3 (March 1, 2004): 291–303. Accessed December 4, 2025. http://indianforester.co.in/index.php/indianforester/article/view/2002.