References
- Houston, W. J. B. (1975). A dental practitioner handbook, Bristol: John Wright.
- Huskie, C. F., Ellis, R. E., Flack, F. C., Selley, W. G. & Curle, H. J. (1979). Clinical application of the Exeter Lip Sensor: A preliminary report. Bulletin of the College of Speech Therapists, 329, 10–12
- Huskie, C. F., Ellis, R. E., Flack, F. C., Coutts, S. E., Dangerfield, A., Wilson, A. C. C. & Selley, W. G. (1981). The Exeter Lip Sensor in clinical use: Work in progress (Part 1). Bulletin of the College of Speech Therapists, 355, 1–5
- Huskie, C. F., Ellis, R. E., Flack, F. C., Coutts, S. E., Dangerfield, A., Wilson, A. C. C. & Selley, W. G. (1981). The Exeter Lip Sensor in clinical use: Work in progress (Part 2). Bulletin of the College of Speech Therapists, 356, 6–10