American Association of State Highway and Transportation Officials (AASHTO), AASHTO LRFD Bridge Design Specifications, 7h Edition with 2015 Interim Revisions.
American Association of State Highway and Transportation Officials (AASHTO), AASHTO LRFD Bridge Design Specifications, 6th Edition with 2013 Interim Revisions, Washington, D.C., 2013.
American Association of State Highway and Transportation Officials (AASHTO), Standard Specifications for Highway Bridges, 17th Ed. Association of General Offices, Washington, D.C., 2003.