Habtoor, Hussein Ali. “Manifestation of Cultural Components of Inner, Outer and Expanding Circles of English Language in EFL Textbooks: A Study of ’Crescent English Course’ for Yemen”. International Journal of English and Education 12, no. 1 (March 31, 2023): 25–43. Accessed November 12, 2026. https://ijee.org/ijee/article/view/IJEE231002.