1. American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders (4th ed., text revision). Washington, DC: Author.
2. Arono, P., Levine, C., & Memmnott, M. (1999). The economic value of informal caregiving. Health Affairs, 18, 182–188.
3. Australian Bureau of Statistics. (1998). Time Use Survey, Australia: A user’s guide (ABS Cat. No. 4150.0). Canberra: Commonwealth of Australia.
4. Australian Bureau of Statistics. (2008). A profile of carers in Australia (catalogue no. 4448.0). Canberra: Commonwealth of Australia.
5. Australian Institute of Health and Welfare. (2007). Australia’s welfare 2007. (catalogue no. Aus 93). Canberra: Australian Institute of Health and Welfare.