United States. Congress. Senate. Committee on Public Works. Subcommittee on Air and Water Pollution. (1970). Water pollution--1970: Hearings, Ninety-first Congress, second session, on S.3687, S.3468, S.3470, S.3471, S.3472, S.3181, S.3484, S.3500, S.3507, S.3614, S.3688, and S.3697 .. U.S. Govt. Print. Off..
芝加哥风格引文United States. Congress. Senate. Committee on Public Works. Subcommittee on Air and Water Pollution. Water Pollution--1970: Hearings, Ninety-first Congress, Second Session, on S.3687, S.3468, S.3470, S.3471, S.3472, S.3181, S.3484, S.3500, S.3507, S.3614, S.3688, and S.3697 .. Washington: U.S. Govt. Print. Off., 1970.
MLA引文United States. Congress. Senate. Committee on Public Works. Subcommittee on Air and Water Pollution. Water Pollution--1970: Hearings, Ninety-first Congress, Second Session, on S.3687, S.3468, S.3470, S.3471, S.3472, S.3181, S.3484, S.3500, S.3507, S.3614, S.3688, and S.3697 .. U.S. Govt. Print. Off., 1970.