School Principal Entrepreneurial Competency Development Model to Optimize Generating Production Unit Income. Journal of Educational and Social Research, London, U.K., v. 11, n. 5, p. 109, 2021. DOI: 10.36941/jesr-2021-0110. Disponível em: https://www.richtmann.org/journal/index.php/jesr/article/view/12622.. Acesso em: 2 may. 2024.