1. Berkil, G. (2008). A closer look at pronunciation learning strategies, L2 pronunciation proficiency and speaking variables influencing pronunciation ability. (Master's thesis, Bilkent University). Retrieved from http://filetez.yok.gov.tr/uye_PDFS_pdfindir.php?URL=RTovUERGLzIyNi8yMjY1MTYucGRmCel ce-Murcia,.
2. Teachingpronunciation: A reference for teachers of English to speakers of otherlanguages;Brinton,1996
3. Teaching native speakers to listen to foreign- accented speech;Derwing;Journal of Multilingual and Multicultural Development,2002
4. Learning to learn English: a course in learner training;Ellis,1989
5. Current perspectives on pronunciation learning and teaching;Hismanoglu;Journal of Language and Linguistic Studies,2006