MASHRAH, Hind. Learning and Teaching Vocabulary Acquisition: Analysing One Unit of a Textbook in the Saudi Arabian Context. Global Journal of Human-Social Science Research, [S.l.], may 2017. ISSN 2249-460X. Available at: <https://socialscienceresearch.org/index.php/GJHSS/article/view/1990>. Date accessed: 26 mar. 2019.