APA (7th ed.) Citation

United States. Mine Safety and Health Administration. (2011). Check in - check out system. U.S. Department of Labor, Mine Safety and Health Administration].

Chicago Style (17th ed.) Citation

United States. Mine Safety and Health Administration. Check in - Check Out System. [Arlington, Virginia: U.S. Department of Labor, Mine Safety and Health Administration], 2011.

MLA (9th ed.) Citation

United States. Mine Safety and Health Administration. Check in - Check Out System. U.S. Department of Labor, Mine Safety and Health Administration], 2011.