Gaya APA
AASHTO, . (1999).
Guide Spesifications For Design and Construction Of Segmental Concrete Bridges (Second edition).
Washington:
AASHTO.
Gaya MLA
AASHTO, .
"Guide Spesifications For Design and Construction Of Segmental Concrete Bridges".
Second edition
Washington:
AASHTO,
1999.
Text.