Ham, R. E. (1990). Therapy of stuttering: Preeschool through adolescence. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Ham, Richard E. Therapy of Stuttering: Preeschool Through Adolescence. Prentice Hall, 1990.
Lua MLA (9ú heag.)Ham, Richard E. Therapy of Stuttering: Preeschool Through Adolescence. Prentice Hall, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.