Gaya APA
AASHTO, . (2004).
AASHTO M 180-00 Standard Specification for Corrugated Sheet Steel Beams for Highway Guardrail .
:
s.n..
Gaya MLA
AASHTO, .
"AASHTO M 180-00 Standard Specification for Corrugated Sheet Steel Beams for Highway Guardrail".
:
s.n.,
2004.
Diorama.