1. Allen, K. A., & McKeen, L. R. (1991). Home-based multicomponent treatment of pediatric migraine. Headache, 31, 467–472.
2. American Academy of Pediatrics Committee on Psychosocial Aspects of Child and Family Health, (1993). The pediatrician and the “new morbidity.” Pediatrics, 92, 731–733.
3. Anderson, H., & Goolishian, H. (1991, October). “Not knowing”: A critical element of a collaborative language systems therapy approach. Plenary address presented at the annual conference of the American Association for Marriage and Family Therapy, Dallas.
4. Apley, J. (1975). The child with abdominal pain (2nd ed.). Oxford: Blackwell.
5. Apley, J., & Naish, N. (1958). Recurrent abdominal pain: A field survey of 1,000 school children. Archives of Diseases of Children, 33,165–170.