Hurst, E., & Horn, J. (2003). EPA targets refineries for information requests and enforcement of air permit requirements. Environmental Law Institute.

Hurst, Elizabeth, and Jan Horn. EPA Targets Refineries for Information Requests and Enforcement of Air Permit Requirements. Washington, D.C.: Environmental Law Institute, 2003.

Hurst, Elizabeth, and Jan Horn. EPA Targets Refineries for Information Requests and Enforcement of Air Permit Requirements. Environmental Law Institute, 2003.