Cita APA (7a ed.)

Feldstein, M., & Clotfelter, C. Tax incentives and charitable contributions in the United States.

Cita Chicago Style (17a ed.)

Feldstein, Martin, y Charles Clotfelter. Tax Incentives and Charitable Contributions in the United States.

Cita MLA (8a ed.)

Feldstein, Martin, y Charles Clotfelter. Tax Incentives and Charitable Contributions in the United States.

Precaución: Estas citas no son 100% exactas.