APA (7th ed.) Citation

Delavari, H. (2011). An acoustic study of English vowels produced by Persian EFL students.

Chicago Style (17th ed.) Citation

Delavari, Hilda. An Acoustic Study of English Vowels Produced by Persian EFL Students. 2011.

MLA (8th ed.) Citation

Delavari, Hilda. An Acoustic Study of English Vowels Produced by Persian EFL Students. 2011.

Warning: These citations may not always be 100% accurate.