INGAY, A. B. Leadership Practice of Elementary school Heads as Determinants of teachers’ Morale in Davao Region ,Philippines. International Journal of Management Excellence (ISSN: 2292-1648), [S. l.], v. 13, n. 2, p. 1935–1955, 2019. DOI: 10.17722/ijme.v13i2.1104. Disponível em: https://techmindresearch.org/index.php/ijme/article/view/1104. Acesso em: 12 oct. 2025.