KAREEM, R. A. Variation and Imperfection Their Implications to the Concept of Language. Journal of University of Human Development, [S. l.], v. 8, n. 3, p. 1–7, 2022. DOI: 10.21928/juhd.v8n3y2022.pp1-7. Disponível em: https://journals.uhd.edu.iq/index.php/juhd/article/view/956. Acesso em: 8 may. 2024.