TY  - RPRT
TI  - Developing spontaneous requesting among children with severe mental retardation.
AU  - L Gobbi
AU  - E Cipani
AU  - C Hudson
AU  - R Lapenta-Neudeck
PY  - 1986
UR  - https://pubmed.ncbi.nlm.nih.gov/3796293/
ID  - 3796293
ER  -