APA-Zitierstil (7. Ausg.)

Sigman, H. (2007). Decentralization and environmental quality: An international analysis of water pollution. National Bureau of Economic Research.

Chicago-Zitierstil (17. Ausg.)

Sigman, Hilary. Decentralization and Environmental Quality: An International Analysis of Water Pollution. Cambridge, Mass: National Bureau of Economic Research, 2007.

MLA-Zitierstil (9. Ausg.)

Sigman, Hilary. Decentralization and Environmental Quality: An International Analysis of Water Pollution. National Bureau of Economic Research, 2007.