Galgamuwa, L. S., D. Iddawela, and S. D. Dharmaratne. “Knowledge and Practices of Food Hygiene Among Food Handlers in Plantation Sector, Sri Lanka”. International Journal of Scientific Reports, vol. 2, no. 12, Nov. 2016, pp. 304-11, doi:10.18203/issn.2454-2156.IntJSciRep20164307.