Catalogue Persistent Identifier
http://nla.gov.au/nla.cat-vn1255828
APA Citation
Ashton, Gerald A. (1977). The essentials of intellectual retardation. Sydney : McGraw-Hill
MLA Citation
Ashton, Gerald A. The essentials of intellectual retardation / Gerald A. Ashton McGraw-Hill Sydney 1977
Australian/Harvard Citation
Ashton, Gerald A. 1977, The essentials of intellectual retardation / Gerald A. Ashton McGraw-Hill Sydney
Wikipedia Citation
{{Citation
| title=The essentials of intellectual retardation / Gerald A. Ashton
| author1=Ashton, Gerald A
| year=1977
| publisher=McGraw-Hill
| language=English
}}








