1. Blandu at al. (2004). “English for Professional Communication”. Bucharest: Printech. Unit 1.
2. Canale, M. and Swain, M. (1980). “Theoretical Bases of Communicative Approaches to Second Language Teaching and Testing”. In “Applied Linguistics” (1980), Volume 1, Toronto: Ontario Ministry of Education, pp. 1-47. Retrieved from http://applij.oxfordjournals.org/content/I/1/1.full.pdf.
3. Galloway, Vicky B. (1985b). “A Design for the Improvement of the Teaching of Culture in Foreign Language Classrooms”. New York: ACTFL Project Proposal.
4. Hadley, Alice Omaggio. (2001). “Teaching Language in Context”. Boston: Heinle & Heinle Publishers, Chapter 8.
5. Johnson, Keith. (2008). “An Introduction to Foreign Language Learning and Teaching” Second Edition. Harlow: Person Education Limited Chapter 2.