Ugochukwu Stephen Onedigbo et Perpetua Okorji, « PRINCIPALS’ INSTRUCTIONAL LEADERSHIP PRACTICES AS PREDICTORS OF TEACHERS’ JOB EFFECTIVENESS IN SECONDARY SCHOOLS IN ANAMBRA STATE », IJAAR, vol. 9, nᵒ 11, p. 178–191, nov. 2023, Consulté le: oct. 24, 2026. Disponible sur: https://www.openjournals.ijaar.org/index.php/ijaar/article/view/279