NYAIGERO, C. K.; AREBA, G. N.; NYAKAN, B. Role of Performance Appraisal Feedback Frequency and Feedback-Based Training on Teachers’ Service Delivery in Public Secondary Schools in Nyamira South Sub County, Kenya. Journal of the Kenya National Commission for UNESCO, [S. l.], v. 6, n. 2, 2026. DOI: 10.62049/jkncu.v6i2.553. Disponível em: https://journals.unesco.go.ke/index.php/jknatcom/article/view/553. Acesso em: 22 jul. 2026.