Crystal, D. (1987). Child language, learning, and linguistics: An overview for the teaching and therapeutic professions (2nd ed.). E. Arnold.
Παραπομπή σε μορφή Chicago (17η εκδ.)Crystal, David. Child Language, Learning, and Linguistics: An Overview for the Teaching and Therapeutic Professions. 2nd ed. [London]: E. Arnold, 1987.
Παραπομπή σε μορφή MLA (9th εκδ.)Crystal, David. Child Language, Learning, and Linguistics: An Overview for the Teaching and Therapeutic Professions. 2nd ed. E. Arnold, 1987.
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