BBC - Radio 4. (n.d.). http://www.bbc.co.uk/radio4/
BBC World Service. (n.d.). http://www.bbc.co.uk/worldservice/
CNN. (n.d.). http://edition.cnn.com/?fbid=pX_grVUROqW
Cotton, D., Falvey, D., & Kent, S. (2014). New Language Leader: Intermediate Coursebook (2 ed). Pearson Education Limited.
Cunningham, S., & Bowler, B. (2005). New headway pronunciation: student’s practice book, Intermediate. Oxford University Press.
Cunningham, S., & Moor, P. (2011). New headway pronunciation: elementary. Oxford University Press.
Dictionary.com - Find the Meanings and Definitions of Words at Dictionary.com. (n.d.). http://dictionary.reference.com/
EFL.NET Improve your English. (n.d.). http://www.efl.net/
English Listening Lounge. (n.d.). http://www.englishlistening.com/
Interesting Things for ESL/EFL Students (Fun English Study). (n.d.). http://www.manythings.org/
Lebeau, I., & Rees, G. (2008). Language leader coursebook and CD-ROM: pre-intermediate. Pearson Education.
Longman dictionary of contemporary English: for advanced learners (6th edition). (2014). Pearson Education Limited.
Murphy, R. (2019). English grammar in use: a self-study reference and practice book for intermediate learners of English (Fifth edition). Cambridge University Press.
Murphy, R., & Murphy, R. (2007). Essential grammar in use: a self-study reference and practice book for elementary students of English : with answers (3rd ed). Cambridge University Press.
Murphy, R., Smalzer, W. R., & Chapple, J. (2017). Basic grammar in use student’s book with answers: self-study reference and practice for students of American English (Fourth edition). Cambridge University Press.
"Phillips, T. & Phillips, A. (2009). New skills in English combined edition Level 2. Reading: Garnet.".
Phillips, T., Phillips, A., & Regan, N. (2011). New skills in English: level 1 : course book. Garnet Education.
Randall’s ESL Cyber Listening Lab - For ESL/EFL Students. (n.d.). http://www.esl-lab.com/
Redman, S. (2005). English vocabulary in use: Pre-intermediate and intermediate: Vol. Vocabulary in use (2nd ed). Cambridge University Press.
Sky News. (n.d.). http://news.sky.com/skynews/
Sounds of English. (n.d.). http://www.soundsofenglish.org/
Swan, M. (2016). Practical English usage (4th ed). Oxford University Press.