Gaya APA
AASHTO, . (2008).
AASHTO M 175 - 05. ASTM C 444 - 03. Standard specification for Perforated concrete pipe (28th).
:
AASHTO.
Gaya MLA
AASHTO, .
"AASHTO M 175 - 05. ASTM C 444 - 03. Standard specification for Perforated concrete pipe".
28th
:
AASHTO,
2008.
Diorama.