Adaniyah R. The Implementation of Quiz-Demonstration-Practice-Revision (QDPR) Learning Model to Improve University Students’ Knowledge of English Pronunciation and Their Ability to Pronounce English Central Vowel /ᴧ/ and English Back Vowel /αː/. VELES [Internet]. 2017 Sep. 4 [cited 2024 Jul. 22];1(2). Available from: https://e-journal.hamzanwadi.ac.id/index.php/veles/article/view/425