Cita APA (7a ed.)

Ehrenberg, R. G., & Smith, C. L. (2001). The sources and uses of annual giving at private research universities. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Ehrenberg, Ronald G., y Christopher L. Smith. The Sources and Uses of Annual Giving at Private Research Universities. Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Ehrenberg, Ronald G., y Christopher L. Smith. The Sources and Uses of Annual Giving at Private Research Universities. National Bureau of Economic Research, 2001.