Carol Ann Tomlinson. 2001. How to Differentiate Instruction in Mixed-Ability Classrooms. Association for Supervision & Curriculum Development. https://ebookcentral.proquest.com/lib/unmc-ebooks/reader.action?docID=3002067&ppg=10.
H., Kim, and Kwon Y. n.d. ‘Exploring Smartphone Applications for Effective Mobile-Assisted Language Learning’ 15 (1): 31–57. http://kmjournal.bada.cc/?page_id=99#.
Harmer, Jeremy. 2015. The Practice of English Language Teaching. 5th ed. Harlow, Essex: Pearson Education.
Hedge, Tricia. 2000. Teaching and Learning in the Language Classroom. Vol. Oxford handbooks for language teachers. Oxford: Oxford University Press.
J., Son. 2016. ‘Selecting and Evaluating Mobile Apps for Language Learning’. In The International Handbook of Mobile-Assisted Language Learning, 161–79. Central Radio & TV University Press. http://www.apacall.org/member/sonjb/research.html#chapters.
McGrath, Ian. 2002. Materials Evaluation and Design for Language Teaching. Vol. Edinburgh textbooks in applied linguistics. Edinburgh: Edinburgh University Press.
Mishan, Freda, and Ivor Timmis. 2015. Materials Development for TESOL. Electronic resource. Edinburgh: Edinburgh University Press. https://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=4306117.
Nunan, David. 1988. Syllabus Design. Vol. Language teaching, a scheme for teacher education. Oxford: Oxford University Press.
Opoku-Amankwa, Kwasi, Aba Brew-Hammond, and Francis Elsbend Kofigah. 2011. ‘What Is in a Textbook? Investigating the Language and Literacy Learning Principles of the “Gateway to English” Textbook Series’. Pedagogy, Culture & Society 19 (2): 291–310. https://doi.org/10.1080/14681366.2011.582264.
Reinders, H. 2006. ‘An Evaluative Checklist for Self-Access Materials’. ELT Journal 60 (3): 272–78. https://doi.org/10.1093/elt/ccl007.
Sheldon, L. E. 1988. ‘Evaluating ELT Textbooks and Materials’. ELT Journal 42 (4): 237–46. https://doi.org/10.1093/elt/42.4.237.
Tomlinson, Brian. 2011. Materials Development in Language Teaching. 2nd ed. Vol. Cambridge language teaching library. Cambridge: Cambridge University Press. https://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=674679.
———. 2012. ‘Materials Development for Language Learning and Teaching’. Language Teaching 45 (02): 143–79. https://doi.org/10.1017/S0261444811000528.
Tomlinson, Brian and ebrary, Inc. 2013. Applied Linguistics and Materials Development. Electronic resource. London: Bloomsbury Academic. http://site.ebrary.com/lib/unmc/Doc?id=10632601.
