1. Dalton, E.1998:3 Teaching Pronunciation. Defines Pronunciation as the production of significant sound in to senses. London: Longman Group Ltd.
2. Ali, S (2016). Towards the development of a comprehensive pedagogical frame work for pronunciation training based on adapted automatic speech recognition system. CALL Communication and culture. EUROCALL, 2016, 7-13.
3. Foote, J.A, & McDonough, K.(2017). Using shadowing with mobile shadowing with mobile technology to improve L2 Pronunciation. Journal. Journal of second language Pronunciation, 3(1),
4. Pennington M.C. Rogerson-Revell P. (2019) Using technology for Pronunciation Teaching, Learning, and Assessment. In: English Pronunciation teaching and research. Research and practice in applied Linguistic. Palgrave Macmilan, London.
5. O’ cannor, 2003, Failure of perfect English pronunciation is mainly due to due linguistic factors.
6. Moosa-1972, conflict between L1 and L2 as noted.
7. Nunan,2001, L1 and L2 showed that errors are expected to be committed. (Cruttenden,1994), Languages cannot be taught, they can only be learnt.
8. (Williams,2013), thus learners should nourish their language by reading and listening to move English article.
9. (Hornby,1995,497), Pronunciation is defined as the way in which languages is spoken. The primary purpose of the language is communication, grammar is important picture.
10. Dalton (1998:3) production of significant sound to senses.
11. Harmer (2000:183) States that, teaching pronunciation not only make students aware of different sound features, but can also improve their speaking immeasurably.
12. Dalton (1998:6) also states about the important of students to be aware of the pronunciation elements. When it comes to language teaching. It is important to note that, there is different between what is effective as appoint of references (or) bearing and which is presented.
13. Ramelan, 1985:22,Speech has two features, they are segmental features-sound and another one is suprasegmental as stress, pitch, length and intonation.