SAMUL, J. The Research Topics of Leadership: Bibliometric Analysis from 1923 to 2019. International Journal of Educational Leadership and Management, [S. l.], v. 8, n. 2, p. 116–143, 2020. DOI: 10.17583/ijelm.2020.5036. Disponível em: https://hipatiapress.com/hpjournals/index.php/ijelm/article/view/5036. Acesso em: 15 jun. 2025.