APA

United States, . (2017). Nutrient pollution: an overview of nutrient reduction approaches : hearing before the Subcommittee on Water and Wildlife of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, October 4, 2011. Washington: U.S. Government Publishing Office.

Chicago

United States, . 2017. Nutrient pollution: an overview of nutrient reduction approaches : hearing before the Subcommittee on Water and Wildlife of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, October 4, 2011. Washington: U.S. Government Publishing Office.

Harvard

United States, . (2017). Nutrient pollution: an overview of nutrient reduction approaches : hearing before the Subcommittee on Water and Wildlife of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, October 4, 2011. Washington: U.S. Government Publishing Office.

MLA

United States, . Nutrient pollution: an overview of nutrient reduction approaches : hearing before the Subcommittee on Water and Wildlife of the Committee on Environment and Public Works, United States Senate, One Hundred Twelfth Congress, first session, October 4, 2011. Washington: U.S. Government Publishing Office. 2017.