1. Directory of Instruments to Measure Quality of Life and Cognate Areas;Cummins,1997
2. Quality of life assessment: position paper from the WHO;WHQOL Group;Soc. Sci. Med.,1995
3. A psychometric evaluation of the comprehensive quality of life scale – fifth edition;Cummins,1999
4. J.W. Varni, Pediatric health-related quality of life: patient-based health outcomes. Visiting scholar invited presentation at the Centre for Pediatric Outcomes Research, Children's Hospital, Los Angeles, 1998.
5. Psychometric properties of the quality of life questionnaire for children with CP;Waters;Dev. Med. Child Neurol.,2007