Verawati, Y. ., and I. N. . Widhya Astawa. “Analysis of Employee Performance Differences Between Permanent Employees and Contract Employees on the Implementation of Incentive Systems AT PT. Altara Cratima Maju, Denpasar, Bali Indonesia”. International Journal of Contemporary Research and Review, vol. 11, no. 02, Feb. 2020, pp. 21766-70, doi:10.15520/ijcrr.v11i02.793.