شاكر، إبراهيم أحمد. (2023). Simplifying the Difficulties of Pronouncing the Vowels and Diphthongs for the Students of Second Stages of Iraqi Intermediate Schools. مجلة الدراسات المستدامة، مج5, ع4 ، 965 - 978. مسترجع من http://search.mandumah.com/Record/1410352
شاكر، إبراهيم أحمد. "Simplifying the Difficulties of Pronouncing the Vowels and Diphthongs for the Students of Second Stages of Iraqi Intermediate Schools." مجلة الدراسات المستدامة مج5, ع4 (2023): 965 - 978. مسترجع من http://search.mandumah.com/Record/1410352