Rahmatzai S, Safi S. Competence and Performance Versus Langue and Parole: A ‎Comparative Linguistic Analysis. Nu. Soc. Sci. J. [Internet]. 2026 Apr. 30 [cited 2026 May 2];3(01):27-32. Available from: https://nussj.nu.edu.af/index.php/nussj/article/view/79