[1]
BBC - Radio 4: http://www.bbc.co.uk/radio4/.
[2]
BBC World Service: http://www.bbc.co.uk/worldservice/.
[3]
CNN: http://edition.cnn.com/?fbid=pX_grVUROqW.
[4]
Cotton, D. et al. 2014. New Language Leader: Intermediate Coursebook. Pearson Education Limited.
[5]
Cunningham, S. and Bowler, B. 2005. New headway pronunciation: student’s practice book, Intermediate. Oxford University Press.
[6]
Cunningham, S. and Moor, P. 2011. New headway pronunciation: elementary. Oxford University Press.
[7]
Dictionary.com - Find the Meanings and Definitions of Words at Dictionary.com: http://dictionary.reference.com/.
[8]
EFL.NET Improve your English: http://www.efl.net/.
[9]
English Listening Lounge: http://www.englishlistening.com/.
[10]
Interesting Things for ESL/EFL Students (Fun English Study): http://www.manythings.org/.
[11]
Lebeau, I. and Rees, G. 2008. Language leader coursebook and CD-ROM: pre-intermediate. Pearson Education.
[12]
Murphy, R. et al. 2017. Basic grammar in use student’s book with answers: self-study reference and practice for students of American English. Cambridge University Press.
[13]
Murphy, R. 2019. English grammar in use: a self-study reference and practice book for intermediate learners of English. Cambridge University Press.
[14]
Murphy, R. and Murphy, R. 2007. Essential grammar in use: a self-study reference and practice book for elementary students of English : with answers. Cambridge University Press.
[15]
Phillips, T. et al. 2011. New skills in English: level 1 : course book. Garnet Education.
[16]
"Phillips, T. & Phillips, A 2009. New skills in English combined edition Level 2. Reading: Garnet.".
[17]
Randall’s ESL Cyber Listening Lab - For ESL/EFL Students: http://www.esl-lab.com/.
[18]
Redman, S. 2005. English vocabulary in use: Pre-intermediate and intermediate. Cambridge University Press.
[19]
Sky News: http://news.sky.com/skynews/.
[20]
Sounds of English: http://www.soundsofenglish.org/.
[21]
Swan, M. 2016. Practical English usage. Oxford University Press.
[22]
2014. Longman dictionary of contemporary English: for advanced learners. Pearson Education Limited.