Gaya APA
AASHTO, . (2003).
AASHTO Guide Specification For Horizontally Curved Steel Girder Highway Bridges .
America:
AASHTO.
Gaya MLA
AASHTO, .
"AASHTO Guide Specification For Horizontally Curved Steel Girder Highway Bridges".
America:
AASHTO,
2003.
Text.