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Bhatia, Tej K. and Ritchie, William C., eds. (2013) The Handbook of Bilingualism and Multilingualism. Wiley-Blackwell, Chichester, West Sussex, UK ; Malden, MA. ISBN 978-1-4443-3490-6

Cohn, Neil (2013) The visual language of comics: introduction to the structure and cognition of sequential images. Bloomsbury advances in semiotics . Bloomsbury Academic, An imprint of Bloomsbury Pub. Plc, London ; New York. ISBN 978-1-4411-7451-2