Đoàn Thị Thanh Tâm, & Truong Bach Le Ph.D huong dan. (2012). "AN INVESTIGATION INTO PRONUNCIATIONOF ENGLISH VOWELS EXPERIENCED BYTHE THIRD-YEAR ENGLISH-MAJOR STUDENTS AT DUY TAN UNIVERSITY".
শিকাগো স্টাইলে সাইটেশনĐoàn Thị Thanh Tâm, এবং Truong Bach Le Ph.D huong dan. "AN INVESTIGATION INTO PRONUNCIATIONOF ENGLISH VOWELS EXPERIENCED BYTHE THIRD-YEAR ENGLISH-MAJOR STUDENTS AT DUY TAN UNIVERSITY". 2012.
এমএলএ সাইটেশনĐoàn Thị Thanh Tâm, এবং Truong Bach Le Ph.D huong dan. "AN INVESTIGATION INTO PRONUNCIATIONOF ENGLISH VOWELS EXPERIENCED BYTHE THIRD-YEAR ENGLISH-MAJOR STUDENTS AT DUY TAN UNIVERSITY". 2012.
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