The directory contains a list and description of 20 quality assurance instruments, 5 organizations, and 10 publications to aid in monitoring service delivery systems for people with mental retardation. A position statement by the Association for Retarded Citizens on the multiple dimensions of quality assessment precedes the list. It stresses important assessment components including asking mentally retarded individuals about their preferences, determining levels of satisfaction from family and friends, applying measures of outcomes, and determining relevance and functionality of goals and objectives within individual plans. Information for each listing includes, where possible, a description, cost information, name of a contact person, address, and telephone number. (DB)