MUSTAFA, I. M. A.; ALNUAIMI, H. S. S. Prepositions: Learning Difficulties of a Semantically-Oriented Part of Speech. JOURNAL OF LANGUAGE STUDIES, [S. l.], v. 3, n. 1, p. 88–103, 2023. DOI: 10.25130/jls.3.1.6. Disponível em: http://jls.tu.edu.iq/index.php/jls/article/view/144. Acesso em: 23 oct. 2025.