Celaya Villanueva, Mª Luz. «The Form of the English Present Continuous in the Interlanguage of Learners of English As a Foreign Language». Babel – AFIAL : Aspectos de Filoloxía Inglesa e Alemá, no. 2 (mayo 21, 2019): 115–122. Accedido diciembre 3, 2025. https://revistas.uvigo.es/index.php/AFIAL/article/view/116.