John J. Patrick, Richard M. Pious, and Donald A. Ritchie. "Department of Health and Human Services." The Oxford Guide to the United States Government. 2001. Encyclopedia.com. 25 Nov. 2009 <http://www.encyclopedia.com>.
John J. Patrick, Richard M. Pious, and Donald A. Ritchie. "Department of Health and Human Services." The Oxford Guide to the United States Government. 2001. Encyclopedia.com. (November 25, 2009). http://www.encyclopedia.com/doc/1O89-DepartmentfHlthndHmnSrvcs.html
John J. Patrick, Richard M. Pious, and Donald A. Ritchie. "Department of Health and Human Services." The Oxford Guide to the United States Government. 2001. Retrieved November 25, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O89-DepartmentfHlthndHmnSrvcs.html