Dyfyniad APA
Clotfelter, C. T. (1985). Federal tax policy and charitable giving. University of Chicago Press.
Dyfyniad Arddull Chicago
Clotfelter, Charles T. Federal Tax Policy and Charitable Giving. Chicago: University of Chicago Press, 1985.
Dyfyniad MLA
Clotfelter, Charles T. Federal Tax Policy and Charitable Giving. University of Chicago Press, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.