References
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- Lantolf , J. P. , ed. 2000 . Sociocultural theory and second language learning , Oxford : Oxford University Press .
- Lantolf , J. P. and Poehner , M. E. 2008 . Sociocultural theory and the teaching of second languages , London : Equinox .
- Pienemann , M. , ed. 2005 . Cross-linguistic aspects of processability theory , Amsterdam : John Benjamins .