Hassan, Ammar, & Seifaldowla Mubarak Hamed Ahmed.
" Inflectional vs. Derivational Morphological Accuracy in Sudanese Undergraduates' EFL Writing: A Comparative Study of the Suffixes "- ing" and "- ion”." <em>Gezira Journal of Educational Sciences and Humanities</em> [Online], 22.2 (2025): 99-111. Web. 22 Oct. 2026