Gaya APA

Hutt, M, L., Gwyn, I, G, R. (1979). The mentally retarded child development, training and education . Boston: Boston: Allyn And Bacon; 1979.

Gaya MLA

Hutt, Max, L., Gwyn, I., Gibby,, Robert. "The mentally retarded child development, training and education". Boston: Boston: Allyn And Bacon; 1979, 1979. Text.