United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Telecommunications and the Internet & ProQuest (Firm). (2001). Ensuring compatibility with enhanced 911 emergency calling systems: A progress report : hearing before the Subcommittee on Telecommunications and the Internet of the Committee on Energy and Commerce, House of Representatives, One Hundred Seventh Congress, first session, June 14, 2001. U.S. G.P.O..
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee on Energy and Commerce. Subcommittee on Telecommunications and the Internet and ProQuest (Firm). Ensuring Compatibility with Enhanced 911 Emergency Calling Systems: A Progress Report : Hearing Before the Subcommittee on Telecommunications and the Internet of the Committee on Energy and Commerce, House of Representatives, One Hundred Seventh Congress, First Session, June 14, 2001. Washington: U.S. G.P.O., 2001.
MLA (9th ed.) CitationUnited States. Congress. House. Committee on Energy and Commerce. Subcommittee on Telecommunications and the Internet and ProQuest (Firm). Ensuring Compatibility with Enhanced 911 Emergency Calling Systems: A Progress Report : Hearing Before the Subcommittee on Telecommunications and the Internet of the Committee on Energy and Commerce, House of Representatives, One Hundred Seventh Congress, First Session, June 14, 2001. U.S. G.P.O., 2001.