APA (7th ed.) Citation

Sigman, H. (2001). International spillovers and water quality in rivers: Do countries free ride? National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Sigman, Hilary. International Spillovers and Water Quality in Rivers: Do Countries Free Ride? Cambridge, MA: National Bureau of Economic Research, 2001.

MLA (9th ed.) Citation

Sigman, Hilary. International Spillovers and Water Quality in Rivers: Do Countries Free Ride? National Bureau of Economic Research, 2001.