Urray Vishwa Kiran, Nitin Vyas, and Akshat Kumar. “Effects Of Covid-19 On Hospitality and Sustainability Practices in Hospitality”. International Journal of Progressive Research in Science and Engineering, vol. 3, no. 08, Aug. 2022, pp. 142-9, https://journal.ijprse.com/index.php/ijprse/article/view/698.