OUKO, Francis Otieno; O. ANDITI, Zephania; N. GITHUA, Benard. Teachers. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 34, n. 2, p. 120–136, 2017. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/7503. Acesso em: 23 sep. 2025.