KARPEL, M. A. (1986). Family resources: The hidden partner in family therapy. The Guilford.
Chicago-viite (17. p.)KARPEL, Mark A. Family Resources: The Hidden Partner in Family Therapy. New York: The Guilford, 1986.
MLA-viite (9. p.)KARPEL, Mark A. Family Resources: The Hidden Partner in Family Therapy. The Guilford, 1986.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.