Виденов 2012: Виденов, Михаил. За понятията стил и регистър. Български език и литература, 2012, кн. 4, 295-300
Ефтимова 2007: Ефтимова, Андреана. Към общ модел на комуникативната компетентност в езиковото обучение. http://liternet.bg/publish9/aeftimova/kompetentnost.htm
Тачева 2011: Тачева, Виолета. Ролята на диалога за развиване на комуникативната компетентност. Продуктивни умения за академични цели.Варна, 2011, 1216
Bagarić, Mihaljević Djigunović 2007: Bagarić,Vesna, Jelena Mihaljević Djigunović. Defining Communicative Competence. Metodika Vol. 8, br. 1, 2007, pp. 94-103
Biber 1999: Douglas Biber, Stig Johansson, Geoffrey Leech, Susan Conrad, Edward Finegan. Longman grammar of spoken and written English. Longman, 1999
Biber 2009: Biber, Douglas, Conrad, Susan. Register, Genre and Style. Cambridge University Press, 2009
Crystal 1987: Crystal, David. Style – the varieties of English. In: A history of literature in the English language, 10. 1987, London: Sphere, 1987
Halliday 1964: Halliday, Michael. Comparison and translation. In: The linguistic sciences and language teaching. London: Longman, 1964
Halliday 1975: Halliday, Michael. Learning How to Mean, London: Edward Arnold. 1975
Nunan 2004: Nunan, David. Task-Based Language Teaching. Cambridge University Press. 2004
Sampson 1997: Sampson, John. “Genre”, “Style” and “Register”. Sources of confusion? In: Revue belge de philologie et d’histoire. 1997, tome 75, fasc. 3, pp. 699-708
Singh 2008: Singh, Kathryn. Language Registers. In: Encyclopedia of Bilingual Education, 2008. http://sk.sagepub.com/reference/bilingual/n174.xml