2US Government Accountability Office.'Elder Justice:Stronger Federal Leadership Could Enhance Na-tional Response to Elder Abuse (March2,2011)'. http://www.gao.gov/new.items/d11208.pdf . 2012
3Imelda Saad.'Changes to parental mainte-nance Act passed'. http://www.channelnewsasia.com/stories/singa-porelocalnews/view/1095129/1/.html . 2010
4United Nations Principles for Older Persons. http://www2.ohchr.org/english/law/olderper-sons.htm . 2012
