Berry, V., & O’Sullivan, B. (n.d.). CEFR and Language Assessment. Retrieved May 22, 2020 from British Council: https://www.britishcouncil.org/sites/default/files/transcript_cefr_and_language_assessment.pdf
British Council & Eaquals. (2015, October 30). The Core Inventory for General English. Retrieved May 21, 2020 from Eaquals: https://www.eaquals.org/resources/the-core-inventory-for-general-english
Cambridge Assessment English. (2020). International Language Standards. Retrieved May 20, 2020 from Cambridge Assessment English: https://www.cambridgeenglish.org/Images/cefr-diagram-december-2020.
Council of Europe. (2018). CEFR 2018 Companion Volume. Retrieved May 20, 2020 from Council of Europe: https://rm.coe.int/cefr-companion-volume-with-new-descriptors-2018/1680787989
Council of Europe. (2020). Global scale – Table 1 (CEFR 3.3): Common Reference levels. Retrieved May 21, 2020 from Council of Europe: https://www.coe.int/web/common-european-framework-reference-languages/table-1-cefr-3.3-common-reference-levels-global-scale
Krashen, S. (1982). Principles and Practices of Second Language Acquisition. Los Angeles: Pergamon.
RMIT University. (2020). English for Academic Purposes. Retrieved May 21, 2020 from RMIT University: https://www.rmit.edu.au/study-with-us/international-students/programs-for-international-students/study-english-language/english-for-academic-purposes
Scrivener, J. (2011). Learning Teaching: The Essential Guide to English Language Teaching (3rd ed.). Macmillan.
University of Cambridge ESOL Examinations. (2011, October). Using the CEFR: Principles of Good Practice. Retrieved May 20, 2020 from International Language Standards: https://www.cambridgeenglish.org/Images/126011-using-cefr-principles-of-good-practice.pdf
Dörnyei, Z. & Ushioda, E. (Eds.). (2009). Motivation, Language Identity and the L2 Self. Multilingual Matters.
Ellis, R. (2015). Understanding Second Language Acquisition (2nd ed.). Oxford University Press.
Ortega, L. (2013). Understanding Second Language Acquisition. Routledge.
Harmer, J. (2007). How to Teach English (2nd ed.). Pearson Education.
Scrivener, J. (2011). Learning Teaching: The Essential Guide to English
Language Teaching (3rd ed.). Macmillan.