Cita APA (7a ed.)

Gray, W. B., & Shadbegian, R. J. (2002). When do firms shift production across states to avoid environmental regulation? National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Gray, Wayne B., y Ronald J. Shadbegian. When Do Firms Shift Production Across States to Avoid Environmental Regulation? Cambridge, MA: National Bureau of Economic Research, 2002.

Cita MLA (9a ed.)

Gray, Wayne B., y Ronald J. Shadbegian. When Do Firms Shift Production Across States to Avoid Environmental Regulation? National Bureau of Economic Research, 2002.