(1976). AASHTO manual for bridge maintenance. American Association of State Highway and Transportation Officials.
Citazione stile Chigago Style (17a edizione)AASHTO Manual for Bridge Maintenance. Washington, D.C: American Association of State Highway and Transportation Officials, 1976.
Citatione MLA (9a ed.)AASHTO Manual for Bridge Maintenance. American Association of State Highway and Transportation Officials, 1976.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.