Cita APA

Ellis, N. R., & Bray, N. W. (1985). International review of research in mental retardation. Orlando, Fla.: Academic Press.

Citación estilo Chicago

Ellis, Norman R., y Norman W. Bray. International Review of Research in Mental Retardation. Orlando, Fla.: Academic Press, 1985.

Cita MLA

Ellis, Norman R., y Norman W. Bray. International Review of Research in Mental Retardation. Orlando, Fla.: Academic Press, 1985.