K. KAMAU, Simon; O. BULA, Dr. Hannah; O. ORINGO, James. 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, Jordan, v. 49, n. 1, p. 175–191, 2018. Disponível em: https://asrjetsjournal.org/American_Scientific_Journal/article/view/4513. Acesso em: 24 sep. 2025.