Ugochukwu Stephen Onedigbo, et Perpetua Okorji. « PRINCIPALS’ INSTRUCTIONAL LEADERSHIP PRACTICES AS PREDICTORS OF TEACHERS’ JOB EFFECTIVENESS IN SECONDARY SCHOOLS IN ANAMBRA STATE ». International Journal of Advanced Academic Research, vol. 9, nᵒ 11, novembre 2023, p. 178-91, https://www.openjournals.ijaar.org/index.php/ijaar/article/view/279.