- J. Hoge. (2008). Subconscious vs Conscious Learning. Effortlessenglish.
Retrieved from http://effortlessenglishclub.com/subconscious-vs-conscious-learning
- Kilgour, Peter W.; Reynaud, Daniel; Northcote, Maria T.; and Shields, Marion, (2015). Role-Playing as a Tool to Facilitate Learning, Self Reflection and Social Awareness in Teacher Education. Avondale College of Higher Education, Australia
- Phil Williams (2014). Embedded Questions Explained. English Lesson Brighton.
Retrieved from http://www.englishlessonsbrighton.co.uk/embedded-questions-exercises/
- Cowan (2008) The Teacher’s Grammar of English. Cambridge: Cambridge University
Press.
- Terence, H & Abul P. (2013). Research Studies in Higher Education: Educating Multicultural College Students. University Press of America, Inc