Hutt, M. L., & Gibby, R. G. (1965). The mentally retarded child, development, education, and treatment (2nd ed.). Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Hutt, Max L., agus Robert Gwyn Gibby. The Mentally Retarded Child, Development, Education, and Treatment. 2nd ed. Boston: Allyn and Bacon, 1965.
Lua MLA (9ú heag.)Hutt, Max L., agus Robert Gwyn Gibby. The Mentally Retarded Child, Development, Education, and Treatment. 2nd ed. Allyn and Bacon, 1965.
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