Shwaysh Ahmed M, Hayif Sameer I, Yassein Al-Heeti MT. The Semantic Roles Which Cause Difficulty To The Fourth Year Students Of English At The University Of Anbar. Opción [Internet]. 30 de julio de 2019 [citado 2 de agosto de 2025];35(89):343-68. Disponible en: https://produccioncientifica.luz.edu.ve/index.php/opcion/article/view/31099