The Degree of Public School Principals’ Implementation of Leadership Standards and its Relationship with the Administrative Efficiency. Journal of Educational and Social Research, London, U.K., v. 6, n. 1, p. 117, 2016. Disponível em: https://www.richtmann.org/journal/index.php/jesr/article/view/8786.. Acesso em: 3 may. 2024.