Joseph Goldstein, Albert J. Solnit, Sonja Goldstein & Anna Freud (Yale University). The Best Interests of the Child (Free Press, 1996 edition).
"The authors speak in one voice in concluding that the continuity of care--continuity of a child's relationship with his or her adult caregiver--is a universal essential to the child's well-being. To this end, they stress that minimizing intrusions by the law is paramount to safeguarding the child's growth and development. 'The least detrimental alternative'--the authors' overarching guideline for assuring the continuity of the psychological parent-child relationship--has been cited in more than a thousand child custody cases since 1973."
—Book jacket