Dyfyniad APA

McGarrity, M. (1993). A guide to mental retardation: A comprehensive resource for parents, teachers, and helpers who know, love, and care for people with mental retardation at all stages in their lives. Crossroad.

Dyfyniad Arddull Chicago

McGarrity, Mark. A Guide to Mental Retardation: A Comprehensive Resource for Parents, Teachers, and Helpers Who Know, Love, and Care for People with Mental Retardation at All Stages in Their Lives. New York: Crossroad, 1993.

Dyfyniad MLA

McGarrity, Mark. A Guide to Mental Retardation: A Comprehensive Resource for Parents, Teachers, and Helpers Who Know, Love, and Care for People with Mental Retardation at All Stages in Their Lives. Crossroad, 1993.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.