Gaya APA
AASHTO, . (2008).
AASHTO M 57 - 80 (2004) Standard specification for materials for embankments and subgrades .
:
AASHTO.
Gaya MLA
AASHTO, .
"AASHTO M 57 - 80 (2004) Standard specification for materials for embankments and subgrades".
:
AASHTO,
2008.
Diorama.