Παραπομπή APA

(1957). Standard specifications for highway bridges. Washington: American Association of State Highway Officials.

Παραπομπή Chicago Style

Standard Specifications for Highway Bridges. Washington: American Association of State Highway Officials, 1957.

Παραπομπή MLA

Standard Specifications for Highway Bridges. Washington: American Association of State Highway Officials, 1957.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.