SHABAN AL-ZEBARI, A. Vagueness in Researches Abstracts. College of Basic Education Research Journal, [S. l.], v. 17, n. 3, p. 1616–1641, 2021. DOI: 10.33899/berj.2021.169689. Disponível em: https://moss.uomosul.edu.iq/index.php/berj/article/view/39483. Acesso em: 26 oct. 2025.