Comparison between the Performance of Trained and Untrained Teachers in Lahore. Global Journal of Human-Social Science, [S. l.], v. 13, n. 9, p. 34–44, 2013. Disponível em: https://www.socialscienceresearch.org/index.php/GJHSS/article/view/. Acesso em: 30 sep. 2026.