1. Allen, R. B. (1976). Bladder capacity and awakening behavior in the treatment of enuresis. Unpublished doctoral dissertation, University of Vermont.
2. Allen, T. D. (1977). The non-neurogenic neurogenic bladder. Journal of Urology, 117, 232–238.
3. American Psychiatric Association. (1987). Diagnostic and statistical manual of mental disorders (3rd ed. rev.). Washington, DC: Author.
4. Anthony, C. P. (1963). Textbook of anatomy and physiology ( 6th ed. ). St. Louis: Mosby.
5. Anthony, E. G. (1957). An experimental approach to the psychopathology of childhood encopresis. British Journal of Medical Psychology, 30, 146–175.