International Association for the Scientific Study of Mental Deficiency & Fraser, W. I. (1990). Key issues in mental retardation research : proceedings of the eighth Congress of the International Association for the the Scientific Study of Mental Deficiency (IASSMD) / edited by W. I. Fraser ; technical editor, C.G.I. Hussell ; editorial board, P. Berry...(et al.): Proceedings of the eighth Congress of the International Association for the the Scientific Study of Mental Deficiency (IASSMD). Routledge.
Chicago Style (17th ed.) CitationInternational Association for the Scientific Study of Mental Deficiency and William I. Fraser. Key Issues in Mental Retardation Research : Proceedings of the Eighth Congress of the International Association for the the Scientific Study of Mental Deficiency (IASSMD) / Edited by W. I. Fraser ; Technical Editor, C.G.I. Hussell ; Editorial Board, P. Berry...(et Al.): Proceedings of the Eighth Congress of the International Association for the the Scientific Study of Mental Deficiency (IASSMD). London: Routledge, 1990.
MLA (9th ed.) CitationInternational Association for the Scientific Study of Mental Deficiency and William I. Fraser. Key Issues in Mental Retardation Research : Proceedings of the Eighth Congress of the International Association for the the Scientific Study of Mental Deficiency (IASSMD) / Edited by W. I. Fraser ; Technical Editor, C.G.I. Hussell ; Editorial Board, P. Berry...(et Al.): Proceedings of the Eighth Congress of the International Association for the the Scientific Study of Mental Deficiency (IASSMD). Routledge, 1990.