Mensah, B. A., S. Achio, and I. O. Asare. “Effects of Stress on Employee Productivity Within the Hospitality Industry in Ghana Using Selected Cafeterias”. The International Journal of Humanities & Social Studies, vol. 7, no. 9, Sept. 2019, doi:10.24940/theijhss/2019/v7/i9/HS1909-077.