SOPUTAN, G. J.; MOGEA, T. Leadership Effectiveness toward Service Productivity. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 13, n. 1, p. 103–110, 2014. Disponível em: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/1356. Acesso em: 3 jul. 2024.