Hu, G. (2005). CLT is best for China—an untenable absolutist claim. ELT journal, 59(1), 65-68.
 Hiep, P. H. (2007). Communicative language teaching: Unity within diversity. ELT journal, 61(3), 193-201.
 Harmer, J. (2007). How to teach English (new edition). Harlow: Pearson Education Limited.
 Graddol, D. (2006). English next (Vol. 62). London: British Council.
 Fairclough, N. (2010). A dialética do discurso. Revista Teias, 11(22), 1-10.
 Esmaili, F. A. (2011). A Comparative study on gender representation in Iranian High School English textbooks and American Headway series: A critical discourse analysis perspective. Unpublished master's thesis. University of Arak, Arak, Iran.
 Nazeri, M. S. (2010). Gender positioning in ELT: Critical discourse analysis of a series of internationally and locally produced textbooks. Unpublished Master thesis. University of Kashan, Kashan, Iran.
 Phillipson, R. (1992). Linguistic imperialism. Oxford: Oxford University Press.
 Shteiwi, M. (2000). English in the new world order: Variations on a theme of linguistic imperialism and world English. In Ricento, T. (Ed.), Ideology, politics and language policies: Focus on English, Amsterdam: John Benjamins, 87-106.
 Hartman,P. L. & Judd, E. L.(1978). Sexism and TESOL Materials. TESOL Quarterly, 12(4), 383-393.
 Elyas, T., & Badawood, O. (2016). English Language Educational Policy in Saudi Arabia Post-21st Century: Enacted Curriculum, Identity, and Modernisation: A Critical Discourse Analysis Approach. In FIRE: Forum for International Research in Education (Vol. 3, No. 3, pp. 70-81). Lehigh University Library and Technology Services. 8A East Packer Avenue, Fairchild Martindale Library Room 514, Bethlehem, PA 18015.
 Xiong, T., & Qian, Y. (2012). Ideologies of English in a Chinese high school EFL textbook: A critical discourse analysis. Asia Pacific Journal of Education, 32(1), 75-92.
 Weninger, C., & Kiss, T. (2013). Culture in English as a foreign language (EFL) textbooks: A semiotic approach. TESOL quarterly, 47(4), 694-716.
 Sahragard, R., & Davatgarzadeh, G. (2012). The representation of social actors in Interchange Third Edition series: A critical discourse analysis. Journal of Teaching Language Skills, 29(1), 67-89.
 Hashemi, M. R., & Ghanizadeh, A. (2012). Critical discourse analysis and critical thinking: An experimental study in an EFL context. System, 40(1), 37-47.
 Bahman, M., & Rahimi, A. (2010). Gender representation in EFL materials: an analysis of English textbooks of Iranian high schools. Procedia-Social and Behavioral Sciences, 9, 273-277.
 Lewis, M. (2017). Language, ideology and education: the politics of textbooks in language education, edited by Xiao Lan Curdt-Chrstiansen and Csilla Weninger: London and New York, Routledge.
 Chase, B.T. & Johannsen, L. (2015). World English 3. New York: Cengage Heinle Publication.
 Ngl.Cengage.Com. (2017). Retrieved from: http://ngl.cengage.com/about.