1. Drummond, M. F., O’Brien, B., Stoddart, G. L., & Torrance, G. W. (1997). Methods for economic evaluation of health care programmes (2nd ed.). Oxford, UK: Oxford University Press.
2. Gold, M. R., Siegel, J. E., Russell, L. B., & Weinstein, M. C. (1996). Cost-effectiveness in health and medicine. Oxford, UK: Oxford University Press.
3. Coons, S. J., Rao, S., Keininger, D. L., & Hays, R. D. (2000). A comparative review of generic quality-of-life instruments. Pharmacoeconomics, 17(1), 13–35.
4. Kopec, J. A., & Willison, K. D. (2003). A comparative review of four preference-weighted measures of health-related quality of life. Journal of Clinical Epidemiology, 56(4), 317–325.
5. Brazier, J., Ratcliffe, J., Tsuchiya, A., & Salomon, J. (2007). Measuring and valuing health benefits for economic evaluation (1st ed.). Oxford, UK: Oxford University Press.