Shah, N. F., S. K. . Pathan, and S. S. . Shah. “Empirical Analysis of the Impact of Performance Appraisal System on employee’s Productivity: A Study of Pakistan Telecommunication Limited (PTCL): Non-Managerial employees’ Perspective”. Journal of Social Sciences Advancement, vol. 3, no. 4, Dec. 2022, pp. 258-6, doi:10.52223/JSSA22-030408-54.