Cita APA (7a ed.)

Sachs, J. (2001). Tropical underdevelopment. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Sachs, Jeffrey. Tropical Underdevelopment. Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Sachs, Jeffrey. Tropical Underdevelopment. National Bureau of Economic Research, 2001.