APA (7th ed.) Citation

United States. Congress. Senate. Committee on Health, Education, Labor, and Pensions. (2013). A tragic anniversary: Improving safety at dangerous mines one year after Upper Big Branch : hearing of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Twelfth Congress, first session ... March 31, 2011. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

United States. Congress. Senate. Committee on Health, Education, Labor, and Pensions. A Tragic Anniversary: Improving Safety at Dangerous Mines One Year After Upper Big Branch : Hearing of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Twelfth Congress, First Session ... March 31, 2011. Washington: U.S. Government Printing Office, 2013.

MLA (9th ed.) Citation

United States. Congress. Senate. Committee on Health, Education, Labor, and Pensions. A Tragic Anniversary: Improving Safety at Dangerous Mines One Year After Upper Big Branch : Hearing of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Twelfth Congress, First Session ... March 31, 2011. U.S. Government Printing Office, 2013.