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.