Reference
- Flexner , S. B. and Hauck , L. C. , eds. 1987 . The Random House dictionary of the English language unabridged , 2nd ed , New York : Random House. .
- Van Hoose , W. H. and Kottler , J. 1977 . Ethical and legal issues in counseling and psychotherapy. , San Francisco, CA : Jossey-Bass. .