Dr. J. Jasmine Hephzipah, Dr V.P. Gladis Pushparathi, D. A. D. W. T. D. V. A. “PANDEMIC DISEASE CONTROL PRACTICES COVID-19: A CROSS-SECTIONAL SURVEY”. Design Engineering, Sept. 2021, pp. 12933-44, http://www.thedesignengineering.com/index.php/DE/article/view/4535.