Martin J. Ball & Chris Code 
Instrumental Clinical Phonetics [PDF ebook] 

Recording and Displaying Speech, Marcel A.a. Tatham et al.
Spectrogrpahy, Alvirda Farmer.
Electromyography, Michel Gentil and Walter H. Moore.
Aerometry, James Anthony and Nigel Hewlett.
Electrolaryngography, Evelyn abberton and Adrianfrocin.
Electropalatography, William J. Hardcastle and Fiona Gibbon.
Imaging Techniques, Martin J. Ball and Berthold Groene.
Auditory phonetic Techniques, Chris Code.
Time-variated Speech, Linda Riensche et al.
A pc-based Experimentation, Assessment and Treatment Technique,
Wolfram Ziegler et al.

Martin J. Ball is Hawthorne-Bo RSF Endowed Professor and Director of the Hawthorne Center for Research in Communicative Disorders at the University of Louisiana at Lafayette. His books include Clinical Sociolinguistics — Wiley-Blackwell, 2005 -, and Phonetics for Communication Disorders and Critical Concepts in Clinical Linguistics.
Chris Code, MA, Ph D, FRCST, FBPs S, is Hon. Professorial Research Fellow, Department of Psychology, University of Exeter, and past Foundation Professor in Communication Sciences and Disorders at the University of Sydney. He received the 2010 Robin Tavistock Award for Services to Aphasia. He is alos Patron of Aphasia Now and co-founding Editor of Aphasiology. Research interests include neuropsychology of language/speech, recovery and treatment of aphasia, psychosocial consequences of aphasia, public awareness and history of aphasia, apraxia and the evolution of language.