Ketcham, J. D., & Simon, K. I. (2008). Medicare Part D's effects on elderly drug costs and utilization. National Bureau of Economic Research.
Chicago-Zitierstil (17. Ausg.)Ketcham, Jonathan D., und Kosali Ilayperuma Simon. Medicare Part D's Effects on Elderly Drug Costs and Utilization. Cambridge, Mass: National Bureau of Economic Research, 2008.
MLA-Zitierstil (9. Ausg.)Ketcham, Jonathan D., und Kosali Ilayperuma Simon. Medicare Part D's Effects on Elderly Drug Costs and Utilization. National Bureau of Economic Research, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.