Hill, C. E. (2001). Helping skills: The empirical foundation. Washington, DC: American Psychological Association.
Chicago Style CitationHill, Clara E.. Helping Skills: The Empirical Foundation. Washington, DC: American Psychological Association, 2001.
MLA CitationHill, Clara E.. Helping Skills: The Empirical Foundation. Washington, DC: American Psychological Association, 2001.
Warning: These citations may not always be 100% accurate.