Muhammadjonova Iroda and Xaydarova Nigora Tuxtasunovna (2025) “THE SYSTEMIC VARIABILITY OF ENGLISH DIPHTHONGS: A THEORETICAL AND PEDAGOGICAL REAPPRAISAL”, International Multidisciplinary Journal for Research & Development, 12(11), pp. 507–510. Available at: https://www.ijmrd.in/index.php/imjrd/article/view/4082 (Accessed: 23 September 2026).