Qayyum, Shazia, Samia Khan, and Faiz Younas. 2022. “Evaluating Mediation and Moderation Effects in Call Center Employees: A Correlational Investigation into Fatigue, General Health, Coping and Sleep Disturbances”. Journal of Public Value and Administrative Insight 5 (2):220-44. https://doi.org/10.31580/jpvai.v5i2.2506.