^Ceres, Jr, Albert F; Myretetus, James D, eds. (1974). The Pennsylvania Manual. Vol. 101. Harrisburg: Pennsylvania Department of Property and Supplies. p. 768. ISBN0-8182-0334-X.
^"2006 General Election". Elections Information. Pennsylvania Department of State. November 7, 2006. Archived from the original on November 27, 2008. Retrieved May 20, 2010.
^"Official Returns". Pennsylvania Department of State. November 8, 2022. Retrieved August 22, 2023.