APA (7th ed.) Citation

Sigman, H. (2000). The pace of progress at Superfund sites: Policy goals nd interest group influence. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Sigman, Hilary. The Pace of Progress at Superfund Sites: Policy Goals Nd Interest Group Influence. Cambridge: National Bureau of Economic Research, 2000.

MLA (9th ed.) Citation

Sigman, Hilary. The Pace of Progress at Superfund Sites: Policy Goals Nd Interest Group Influence. National Bureau of Economic Research, 2000.

Warning: These citations may not always be 100% accurate.