Johnson, K., & Rannveig Traustadóttir. (2005). Deinstitutionalization and people with intellectual disabilities: In and out of institutions. Jessica Kingsley Publishers.

Johnson, Kelley, and Rannveig Traustadóttir. Deinstitutionalization and People with Intellectual Disabilities: In and Out of Institutions. London ; Philadelphia: Jessica Kingsley Publishers, 2005.

Johnson, Kelley, and Rannveig Traustadóttir. Deinstitutionalization and People with Intellectual Disabilities: In and Out of Institutions. Jessica Kingsley Publishers, 2005.