Gaya APA
Beal, D, B. (2006).
Development of LRFD Specifications for Horizontally Curved Steel Girder Bridges .
Washington:
TRB.
Gaya MLA
Beal, David, B,.
"Development of LRFD Specifications for Horizontally Curved Steel Girder Bridges".
Washington:
TRB,
2006.
Text.