Ardavani, S., & Durrant, P. (2015). How have political and socio-economic issues impacted on the motivation of Iranian university students to learn English? the Islamic Republic of Iran, 35.
Ary, D., Jacobs, L. C., & Razavieh, A. (2010). Introduction to Research in Education 8th edition, Wardswoth Cengage Learning. Canada: Nelson Education ltd Exotic Classic.
Azarnoosh, M., & Birjandi, P. (2012). Junior high school students’ L2 motivational self system: Any gender differences. World Applied Sciences Journal, 20(4), 577-584.
Chalak, A., & Kassaian, Z. (2010). Motivation and attitudes of Iranian undergraduate EFL students towards learning English. GEMA Online® Journal of Language Studies, 10(2).
Choubsaz, Y., & Choubsaz, Y. (2014). Motivational Orientation and EFL Learning: A Study of Iranian Undergraduate Students. Procedia-Social and Behavioral Sciences, 98, 392-397.
Dörnyei, Z. (1998). Motivation in second and foreign language learning. Language teaching, 31(3), 117-135.
Dörnyei, Z. (2005). The psychology of the language learner. Lawrence Erlbaum: Mahwah, NJ.
Dornyei, Z., & Ottó, I. (1998). Motivation in action: A process model of L2 motivation. Working Papers in Applied Linguistics, 4, 43-69.
Dörnyei, Z., & Ushioda, E. (2013). Teaching and researching: Motivation: Routledge.
Ebrahim Khodadady, G. (2013). Exploring the Role of Anxiety and Motivation in foreign Language Achievement: A Structural Equation Modelinh Approach. Porta Linguarum, 269-286.
Gardner, R. C. (1985). Social psychology and second language learning: The role of attitudes and motivation: Arnold.
Gardner, R. C., & Lambert, W. E. (1972). Attitudes and Motivation in Second-Language Learning. Rowley, MA: Newbury House Publishers.
Jaccard, J., & Wan, C. K. (1996). LISREL approaches to interaction effects in multiple regression: Sage.
Jannati, M., & Marzban, A. (2014). The Relationship Between Iranian EFL Learners’ Motivation and Their English Proficiency Level.
Khodadady, E., & Ashrafborji, M. (2013). Motivations underlying English language learning and achievement. Sage Open, 3(2), 2158244013484157.
Klimova, B. F. (2011). Motivation for learning English at a university level. Procedia-Social and Behavioral Sciences, 15, 2599-2603.
Mahdavy, B. (2013). Gender and motivational orientations of English language learners: The case of high school students in Iran. Procedia-Social and Behavioral Sciences, 70, 1056-1061.
Mehrpour, S., & Vojdani, M. (2012). Globalization and EFL learning motivation: A new perspective on integrative vs. instrumental motivation among Iranian learners of English. Open Journal of Modern Linguistics, 2(2), 43-50.
Noels, K. A. (2001). New orientations in language learning motivation: Towards a model of intrinsic, extrinsic, and integrative orientations and motivation. Motivation and second language acquisition, 23, 43-68.
Oxford, R. L. (1990). Language learning strategies and beyond: A look at strategies in the context of styles. Shifting the instructional focus to the learner, 35-55.
Pallant, J. (2007). SPSS survival manual: A step-by-step guide to data analysis using SPSS version 15. Nova Iorque: McGraw Hill.
Papi, M., & Teimouri, Y. (2012). Dynamics of selves and motivation: a cross‐sectional study in the EFL context of Iran. International Journal of Applied Linguistics, 22(3), 287-309.
Rehman, A., Bilal, H., Sheikh, A., Bibi, N., & Nawaz, A. (2014). The role of motivation in learning English language for Pakistani learners. International Journal of Humanities and Social Science, 4(1), 254-258.
Sanadgol, F., & Abdolmanafi-Rokni, S. J. (2015). Anxiety, Motivation and Autonomy in Iranian High School Students: A Quantitative Study. Advances in Language and Literary Studies, 6(1), 143-149.
Shevlin, M., & Miles, J. N. (1998). Effects of sample size, model specification and factor loadings on the GFI in confirmatory factor analysis. Personality and Individual differences, 25(1), 85-90.
Steiger, J. H. (2007). Understanding the limitations of global fit assessment in structural equation modeling. Personality and Individual differences, 42(5), 893-898.
Ullman, J. B., & Bentler, P. M. (2003). Structural equation modeling: Wiley Online Library.
Ushioda, E. (2009). A person-in-context relational view of emergent motivation, self and identity. Motivation, language identity and the L2 self, 215-228.
Vaezi, Z. (2008). Language learning motivation among Iranian undergraduate students. World Applied Sciences Journal, 5(1), 54-61.
Weger, H. (2013). International students' attitudes toward L2-English classroom activities and language skills in the USA. Innovation in Language Learning and Teaching, 7(2), 139-157.