Ham, R. E. (1990). Therapy of stuttering: Preeschool through adolescence. Prentice Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHam, Richard E. Therapy of Stuttering: Preeschool Through Adolescence. Prentice Hall, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHam, Richard E. Therapy of Stuttering: Preeschool Through Adolescence. Prentice Hall, 1990.
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