Data collection and classification in services for the mentally retarded : report on a Working Group [on Data Collection and Classification in Services for the Mentally Retarded] convened by the Regional Office for Europe of the World Health Organization, Barcelona, 7 - 10 March 1972.

MLA

Data Collection and Classification In Services for the Mentally Retarded : Report On a Working Group [on Data Collection and Classification In Services for the Mentally Retarded] Convened by the Regional Office for Europe of the World Health Organization, Barcelona, 7 - 10 March 1972. Copenhagen: WHO. Regional office for Europe, 1972.

APA

(1972). Data collection and classification in services for the mentally retarded : report on a Working Group [on Data Collection and Classification in Services for the Mentally Retarded] convened by the Regional Office for Europe of the World Health Organization, Barcelona, 7 - 10 March 1972. Copenhagen: WHO. Regional office for Europe.

Chicago

Data Collection and Classification In Services for the Mentally Retarded: Report On a Working Group [on Data Collection and Classification In Services for the Mentally Retarded] Convened by the Regional Office for Europe of the World Health Organization, Barcelona, 7 - 10 March 1972. Copenhagen: WHO. Regional office for Europe, 1972.