Cita APA (7th ed.)

Ellis, N. R. (1966). International review of research in mental retardation. Academic Press.

Cita Chicago (17th ed.)

Ellis, Norman R. International Review of Research in Mental Retardation. New York: Academic Press, 1966.

Cita MLA (8th ed.)

Ellis, Norman R. International Review of Research in Mental Retardation. Academic Press, 1966.