Carter, R., Hughes, R, & McCarthy, M. Exploring Grammar in Context. Cambridge: Cambridge University Press, 2000.
Carter, R. & McCarthy, M. Cambridge Grammar of English. Cambridge: Cambridge University Press, 2006.
Fava-Verdé, Amanda & Anthony Manning with Paul Harvey. Essay Writing Course Book. Reading: Garnet Publishing Ltd., 2007.
Hewings, Martin. Advanced Grammar in Use: A Self-study Reference and Practice Book for Advanced Learners of English: with Answers. Cambridge: Cambridge University Press, 2005.
McCarthy, Michael & Felicity O'Dell. English Vocabulary in Use: Advanced / Michael McCarthy, Cambridge: Cambridge University Press, 2002.
Pallant, Anne. English for Academic Study: Writing. Course Book. Reading: Garnet Publishing Ltd., 2009.
Skipper, Mark. Advanced Grammar & Vocabulary. Student's Book. Newbury, Berkshire: Express Publishing, 2002.
Swan, Michael. Practical English Usage. Oxford: Oxford University Press, 1995 (imp. 2000)
Collins COBUILD Advanced Learner's English Dictionary. Glasgow: Harper Collins, 2006.
McCarthy, M. & O’Dell, F. English Collocations in Use. Cambridge: C.U.P, 2005.
Longman Language Activator. Harlow: Longman. 1993
Macmillan English Dictionary for Advanced Learners. Oxford: Macmillan, 2002.
Oxford Advanced Learner’s Dictionary. Oxford University Press
Webster’s Dictionary & Thesaurus. Chicago: Trident Press International. 1999
Collins Cobuild English Usage, Harper Collins
N.D Turton and J.B Heaton. Longman Dictionary of Common Errors. Longman.
Cambridge Phrasal Verbs Dictionary. Cambridge University Press.
Cambridge Idioms Dictionary. Cambridge University Press.
Cambridge English Pronunciation Dictionary. Cambridge University Press.
http://www.vaughantelevision.com http://www.grupovaughan.com
http://www.wordreference.com (dictionary)
http://www.answers.com (dictionary)
http://iate.europa.eu/iatediff/SearchByQuery.do (dictionary)
http://www.english-at-home.com/real-life-english (grammar & vocabulary) http://www.nonstopenglish.com/Default-001.asp (grammar & vocabulary)
http://www.esl-lab.com (with listening)
http://www.agendaweb.org
http://www.breakingnewsenglish.com ( + listening)
http://www.bbc.co.uk/worldservice/learningenglish (+listening + video)
British Council - Teaching Updates
http://www.elllo.org
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The Online Writing Lab (OWL) at Purdue University
http://owl.english.purdue.edu/handouts/WAC/
Writing Center of the University of Wisconsin-Madison: Writer’s Handbook http://www.wisc.edu/writing/Handbook/index.html The UVic Writer's Guide
http://web.uvic.ca/wguide/Pages/WritingAsProcess.html
Center for Writing Studies (University of Illinois at Urbana-Champaign) http://www.cws.illinois.edu/workshop/writers/ A Writer’s Reference (Diane Hacker)
http://bcs.bedfordstmartins.com/writersref6e/Player/Pages/Main.aspx