N. N. A. B. Ovie, A. E. Eregie, and A. R. Ugbenu, “Evaluating Principals’ Administrative Planning Skills in Public Senior Secondary Schools in Ethiope East, Delta State”, Int J Univers Educ, vol. 3, no. 2, pp. 37–47, Feb. 2026, doi: 10.33084/ijue.v3i2.11432.