OPOKU, Daniel. Supervision and Productivity in Academic Libraries: Focus on the University of Ghana Library System (UGLS). Journal of Research in Education and Society (JRES) , [S. l.], v. 3, n. 2, p. 64–69, 2012. Disponível em: http://icidr.org.ng/index.php/Jres/article/view/1289. Acesso em: 20 sep. 2024.