APA stil citiranja
Ball, M. J. (2002). Vowel Disorders: Vowel Disorders (1. izd.). Butterworth Heinemann.
Chicago stil citiranjaBall, Martin J. Vowel Disorders: Vowel Disorders. 1. izd. Butterworth Heinemann, 2002.
MLA stil citiranjaBall, Martin J. Vowel Disorders: Vowel Disorders. 1. izd. Butterworth Heinemann, 2002.
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