VOLLMUTH, Joachim. Approaches and Instruments of Civil Servants Performance Appraisal in European Countries. International Journal of Civil Service Reform and Practice, [S. l.], v. 2, n. 1, 2014. DOI: 10.56289/ijcsrp.33. Disponível em: https://astanahubjournal.org/index.php/ijcsrp/article/view/33. Acesso em: 26 mar. 2026.