APA
McClellan M., Staiger D., . (1999). Comparing hospital quality at for-profit and not-for-profit. Cambridge, Mass: National Bureau of Economic Research.
Chicago
McClellan Mark, Staiger Douglas, . 1999. Comparing hospital quality at for-profit and not-for-profit. Cambridge, Mass: National Bureau of Economic Research.
Harvard
McClellan M., Staiger D., . (1999). Comparing hospital quality at for-profit and not-for-profit. Cambridge, Mass: National Bureau of Economic Research.
MLA
McClellan Mark, Staiger Douglas, . Comparing hospital quality at for-profit and not-for-profit. Cambridge, Mass: National Bureau of Economic Research. 1999.