Cita APA (7a ed.)

Garicano, L., & Santos, T. (2001). Referrals. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Garicano, Luis, y Tano Santos. Referrals. Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Garicano, Luis, y Tano Santos. Referrals. National Bureau of Economic Research, 2001.