SCHULTE, Don P.; SLATE, John R.; ONWUEGBUZIE, Anthony J. Characteristics of Effective School Principals: A Mixed-Research Study. Alberta Journal of Educational Research, [S. l.], v. 56, n. 2, 2010. DOI: 10.55016/ojs/ajer.v56i2.55397. Disponível em: https://journalhosting.ucalgary.ca/index.php/ajer/article/view/55397. Acesso em: 5 dec. 2025.