1. Arvan, L., Musumeci, D.: Instructor attitudes within the SCALE efficiency Projects. Journal of Asynchronous Learning Network 4(3), 196–215 (2000)
2. Ayres, R.: Learner attitudes towards the use of CALL. Computer Assisted Language Learning 15, 241–249 (2002)
3. Blake, R., Delforge, A.M.: Online language learning: The case of Spanish without walls. In: Salaberry, R., Lafford, B.A. (eds.) The art of teaching Spanish: Second language acquisition from research to praxis, pp. 127–148. Georgetown University Press, Washington (2006)
4. Bonk, C.J., Graham, C.R.: Handbook of blended learning: Global perspectives, local designs. Pfeiffer Publishing, San Francisco (2006)
5. den Brok, P., Brekelmans, M., Wubbels, T.: Multilevel issues in research using students’ perceptions of learning environments: The case of the questionnaire on teacher interaction. Learning Environments Research 9(3), 199–213 (2006)