Helfer, R. E. (1976). The diagnostic process and treatment programs. U.S. Dept. of Health, Education and Welfare.
Chicago-Zitierstil (17. Ausg.)Helfer, Ray E. The Diagnostic Process and Treatment Programs. Washington, D.C: U.S. Dept. of Health, Education and Welfare, 1976.
MLA-Zitierstil (9. Ausg.)Helfer, Ray E. The Diagnostic Process and Treatment Programs. U.S. Dept. of Health, Education and Welfare, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.