• Amerian, M. (2012). “Relationship between EFL Learners’ Perceived Social Self-Efficacy and their Foreign Language Classroom Anxiety”. Journal of English Language Teaching and Learning, No. 10
• Babazadeh, J. & M. Rahbari , (2011), “The Russian language teacher and his/her role in the formation & development of motivation for the study of Russian language”. Foreign Language Research Journal. Vol. 1, Issue 2, Summer and Autumn 2011. Pp. 37-45. [In Persian].
• Betz, N. E. & G. Hackett, (1981), “The relationship of career-related self-efficacy expectations to perceived career options in college women and men. Journal of Counseling Psychology. 28(5). Pp. 399-410.
• Farsian, M.; N. Rezaei & S. Panahandeh, (2014), “Correlation between achievement motivation, emotional intelligence and the foreign language classroom anxiety in French students of Ferdowsi University of Mashhad”. Language Related Research. 6(4) .[In Persian].
• Kadivar, P. (1392). Psychology of Learning: From Theory to Practice. Ed. 2. Tehran: SAMT. [In Persian].
• Hashimoto, Y. (2002). Motivation and Willingness to Communicate as Predicators of Reported L2 Use, The Japanese ESL Contest, Second Language Studios. 20 (2). Pp. 29 – 70
• Karimi, Allvar, N. (2004). “The effects of shyness, elicitation task nature on Iranian EFL Students, use of oral communication strategies”. Journal of Humanities, Vol. 11 (3). Pp. 145 – 159
• Khan Ahmad, F. (2014). Exploring the relationship among shyness, self-efficacy, and willingness to communicate with regard to Iranian EFL students, Language Achievement. M.A Thesis: Ferdowsi University, Mashhad.
• Letafati, R. & A. Razini (2015) “Empathy, an influencing behavioral model in the interaction between teacher and learner”. Language Related Research. 6 (1). Pp. 229-252 [In Persian].
• Lewis, M. & B. Gravatt (1999). “The importance of talk to learning: ESOL students' viewpoints”. New Zealand Journal of Adult Learning. 27(1). Pp. 32-40.
• McCroskey, J.C. (1992). “Reliability and validity of the willingness to communicate scale”. Communication Quarterly. 40. Pp. 16-25
• McCroskey, J. C. & V. P. Richmond (1987). Willingness to Communicate. In J. C. McCroskey & J. A. Daly (Eds.), Personality and interpersonal communication (pp. 119-131). Newbury Park, CA: Sage.
• McIntyre, P.D. (2007). “Willingness to communicate in the second language: Understanding the decisions to speak as a volitional process.” Modern Language Journal. 91 (4). Pp. 564 – 576
• Pishghadam, R (2016). “Emotioncy, Extraversion, and Anxiety in Willingness to Communicate in English”. The 5th International Conference on Language, Education, and Innovation. 2016/05/27.
• Pishghadam, R. & H. Abbasnejad (2016). “Emotioncy: A Potential Measure of Readability”. International Electronic Journal of Elementary Education. September 2016, 9(1).Pp. 109-123.
• Pishghadam, R. et. al. (2018). “Examining the effects of emotioncy-based teaching on the emotions of non-Iranian female Persian language learners in Iran”. Language Related Research. 9 (3). Pp. 63-97 [In Persian].
• Sadatian, A. (2011). Shyness and Social Phobia. Ma va Shoma. [In Persian].
• Salter, A. (1949). Conditioned Reflex Therapy: Creative Age Press
• Shafiei, E. (2011).“Oral Communication Apprehension and Affective Factors: Self-esteem and Introversion / Extroversion”, Journal of English Language Teaching and Learning. Year 5, No. 7
• Tarone, E. (1980). Communication Strategies, Foreign Talk, and Repair in Interlanguage. Language Learning, 30. Pp. 417 – 429
• Trower, P. (1980). “Situational analysis of the components and process of behavior of socially skilled and unskilled Patients”. Journal of Clinical and Consulting Psychology. 1980, 98. Pp. 327 – 339
• Wolpe, J. (1990). The Practice of Behavior Therapy. Pergamon Press, New York.