Nyaigero, C. K., G. N. Areba, and B. Nyakan. “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, vol. 6, no. 2, July 2026, doi:10.62049/jkncu.v6i2.553.