S. Senthil Kumar, Dr. C. Vellaichamy. “A Study on Tea Plantation Worker’s Health, Safety and Welfare Measures of Tea Estates With Reference to Nilgiris District, Tamilnadu”. International Journal of Advanced Science and Technology, Vol. 29, no. 5s, June 2020, pp. 2160 -68, http://sersc.org/journals/index.php/IJAST/article/view/21324.