AL SARRAF, Hanan Hassan; ALHAMMAD, Mozah. The Effect of Class Size on Achievement of English students. Journal of Educational and Psychological Sciences, New Mexico, United States, v. 3, n. 9, p. 141–132, 2019. DOI: 10.26389/AJSRP.H190319. Disponível em: https://journals.ajsrp.com/index.php/jeps/article/view/1069. Acesso em: 24 jan. 2026.