Duffy, Joseph R. Motor speech disorders : substrates, differential diagnosis, and management / Joseph R. Duffy. - 3rd ed. - St. Louis : Elsevier Mosby, 2013. - xi, 499 p. : ill. ; 28 cm. ISBN: 9780323072007 RM263.19 Subjects--Topical Terms: Dysarthria--Diagnosis.Dysarthria--Therapy.Speech disorders--Diagnosis.Speech disorders--Therapy.