Annelies Kusters and Maartje De Meulder, The use of language portraits in the study of multilingual and multimodal repertoires, https://bib.irb.hr/datoteka/1009214.visual_verbal_abstracts_final.pdf
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Part 3 of Autonomous Language Learning with Technology: Beyond the Classroom (Advances in Digital Language Learning and Teaching), Chun Lai, New York: Bloomsbury Academic, 2017