Shinwari MK, Shinwari I, Shinwari FG. Investigating the Impacts of Grammatical Mistakes of English ‎Writing and Speaking Skills in English Department Students at ‎Sayed Jamaluddin Afghani University. Nu. Soc. Sci. J. [Internet]. 2025 Nov. 19 [cited 2025 Dec. 7];2(04):09-14. Available from: http://nussj.nu.edu.af/index.php/nussj/article/view/63