References :

Escandell-Vidal V. (2010). Social cognition and second language learning. In R. Gómez-Morón et al. (Eds.) Pragmatics applied to language teaching and learning (pp. 1–39). Newcastle: Cambridge Scholars.

Poyatos, F. (2002). Nonverbal communication across disciplines: Vol. 2. Paralanguage, kinesics, silence, personal and environmental interaction. London: Benjamins.