1. Akram, A., & Behnam, B. (2012). The pragmatic knowledge of Iranian EFL learners in using face keeping strategies in reaction to complaints at two different levels. English Language Teaching, 5(2), 78–92.
2. Arguedas, M., Daradoumis, T., & Xhafa, F. (2016). Analyzing how emotion awareness influences students’ motivation, engagement, self-regulation and learning outcome. Educational Technology & Society, 19(2), 87–103.
3. Arndt, H., & Janney, R. W. (1985). Politeness revisited: Cross-modal supportive strategies. IRAL, 23(4), 281–300.
4. Ayadi, M. M. H., Kamel, E. S., & Karray, F. (2011). Survey on speech emotion recognition, features, classification schemes, and databases. Pattern Recognition, 44, 572–587.
5. Bagozzi, R. P., Gopinath, M., & Nyer, P. U. (1999). The role of emotions in marketing. Journal of the Academy of Marketing Science, 27, 184–206.