Cita APA (7a ed.)

Estevao, M., & Lach, S. (1999). The evolution of the demand for temporary help supply employment in the United States. National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Estevao, Marcello, y Saul Lach. The Evolution of the Demand for Temporary Help Supply Employment in the United States. Cambridge, MA: National Bureau of Economic Research, 1999.

Cita MLA (9a ed.)

Estevao, Marcello, y Saul Lach. The Evolution of the Demand for Temporary Help Supply Employment in the United States. National Bureau of Economic Research, 1999.