Perkins, W. H. (1978). Human perpsectives in speech and language disorders. The C. V. Mosby.
Čikaški stil citiranja (17. izdanje)Perkins, William H. Human Perpsectives in Speech and Language Disorders. The C. V. Mosby, 1978.
MLA način citiranja (9. izdanje)Perkins, William H. Human Perpsectives in Speech and Language Disorders. The C. V. Mosby, 1978.
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