MLA

Ralph Kober, and Ralph Kober. Enhancing the Quality of Life of People with Intellectual Disabilities. Springer Netherlands, 2011.

APA

Ralph Kober, R. Kober, & Kober, R. (2011). Enhancing the Quality of Life of People with Intellectual Disabilities. Springer Netherlands.

Chicago

Ralph Kober, and Ralph Kober. Enhancing the Quality of Life of People with Intellectual Disabilities. : Springer Netherlands, 2011.