Ardiza, F., L. C. Nawangsari, and A. H. Sutawidjaya. “The Influence of Green Performance Appraisal and Green Compensation to Improve Employee Performance through OCBE”. International Review of Management and Marketing, vol. 11, no. 4, July 2021, pp. 13-22, https://econjournals.com/index.php/irmm/article/view/11632.