AYORO, Raphael. THE RELATIONSHIP BETWEEN PRINCIPALS’ LEADERSHIP PRACTICES AND EFFECTIVE ADMINISTRATION IN PUBLIC SECONDARY SCHOOLS IN DELTA STATE. BSU Journal of Education, Nigeria, v. 25, n. 2, p. 129–137, 2025. DOI: 10.60787/bsuje.vol25no2.40. Disponível em: https://bsuje.org.ng/index.php/home/article/view/40. Acesso em: 10 jun. 2026.