United States. Government Accountability Office, United States. Congress. Senate. Committee on Environment and Public Works, & Stephenson, J. B. (2007). World Trade Center: Preliminary observations on EPA's second program to address indoor contamination : testimony before the Subcommittee on Superfund and Environmental Health, Committee on Environment and Public Works, U.S. Senate. U.S. Govt. Accountability Office.
Chicago Style (17th ed.) CitationUnited States. Government Accountability Office, United States. Congress. Senate. Committee on Environment and Public Works, and John B. Stephenson. World Trade Center: Preliminary Observations on EPA's Second Program to Address Indoor Contamination : Testimony Before the Subcommittee on Superfund and Environmental Health, Committee on Environment and Public Works, U.S. Senate. [Washington, D.C.]: U.S. Govt. Accountability Office, 2007.
MLA (9th ed.) CitationUnited States. Government Accountability Office, et al. World Trade Center: Preliminary Observations on EPA's Second Program to Address Indoor Contamination : Testimony Before the Subcommittee on Superfund and Environmental Health, Committee on Environment and Public Works, U.S. Senate. U.S. Govt. Accountability Office, 2007.