1. British National Corpus (BNC), CQP-edition: http://www.natcorp.ox.ac.uk/ and http://rdues.bcu.ac.uk/bncweb/manual/bncwebman-home.htm. Brigham Young interface (Mark Davies): http://corpus.byu.edu/bnc/
2. The British Academic Written English Corpus (BAWE): http://www.coventry.ac.uk/research/research-directory/art-design/british-academic-written-english-corpus-bawe/
3. The English-Norwegian Parallel Corpus (ENPC): http://www.hf.uio.no/ilos/english/services/omc/enpc/
4. The Varieties of English for Specific Purposes dAtabase (VESPA) learner corpus: http://www.uclouvain.be/en-cecl-vespa.html and http://www.hf.uio.no/ilos/english/services/vespa/
5. Metadiscourse in L1 and L2 English