Gaya APA

Barker, R, M. (1997). Design of highway bridges: based on AASHTO LRFD, bridge design specifications . New York: John Wiley & Sons.

Gaya MLA

Barker, Richard, M.. "Design of highway bridges: based on AASHTO LRFD, bridge design specifications". New York: John Wiley & Sons, 1997. Text.