K. KAMAU, S.; O. BULA, D. H.; O. ORINGO, J. Challenges of Performance Appraisal Implementation and their Effects on Service Delivery in Public Secondary Schools in Githunguri Sub-county of Kiambu County, Kenya. American Scientific Research Journal for Engineering, Technology, and Sciences, [S. l.], v. 49, n. 1, p. 175–191, 2018. Disponível em: https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4513. Acesso em: 4 dec. 2023.