Kirk, Robert S.; Mallett, William J.; Peterman, David Randall; Frittelli, John; Canis, Bill & Luther, Linda. Surface Transportation Program Reauthorization Issues for Congress, report, October 7, 2014; (https://digital.library.unt.edu/ark:/67531/metadc808203/m1/1/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .