1. The psychology of the language learner revisited Dörnyei, Zoltán. New York, NY : Routledge, c2015. ENG364
2. Planning and task performance in a second language Philadelphia : John Benjamins Pub. Co., c2005. ENG325
3. Interaction and second language development: a Vygotskian perspective Compernolle, Rémi A. van, Amsterdam ; John Benjamins Publishing Company, [2015] ENG364
