American Association of State Highway Officials. (1970). Standard specifications for movable highway bridges 1970. American Association of State Highway Officials.
Citazione stile Chigago Style (17a edizione)American Association of State Highway Officials. Standard Specifications for Movable Highway Bridges 1970. Washington, D.C: American Association of State Highway Officials, 1970.
Citatione MLA (9a ed.)American Association of State Highway Officials. Standard Specifications for Movable Highway Bridges 1970. American Association of State Highway Officials, 1970.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.