APA (7th ed.) Zitazioa

(1976). AASHTO manual for bridge maintenance. American Association of State Highway and Transportation Officials.

Chicago Style (17th ed.) Zitazioa

AASHTO Manual for Bridge Maintenance. Washington, D.C: American Association of State Highway and Transportation Officials, 1976.

MLA (9th ed.) Zitazioa

AASHTO Manual for Bridge Maintenance. American Association of State Highway and Transportation Officials, 1976.