APA

United States, . (2016). Abandoned mines in the United States and opportunities for Good Samaritan cleanups: hearing before the Subcommittee on Water Resources and Environment of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Fourteenth Congress, first session, October 21, 2015. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2016. Abandoned mines in the United States and opportunities for Good Samaritan cleanups: hearing before the Subcommittee on Water Resources and Environment of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Fourteenth Congress, first session, October 21, 2015. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2016). Abandoned mines in the United States and opportunities for Good Samaritan cleanups: hearing before the Subcommittee on Water Resources and Environment of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Fourteenth Congress, first session, October 21, 2015. Washington: U.S. Government Publishing Office.

MLA

United States, . Abandoned mines in the United States and opportunities for Good Samaritan cleanups: hearing before the Subcommittee on Water Resources and Environment of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Fourteenth Congress, first session, October 21, 2015. Washington: U.S. Government Publishing Office. 2016.