Gaya APA
AASHTO, . ().
AASHTO M 178-95 (2003) , ASTM C 412M-99 Standard Specification for Concrete Drain Tile (Metric) .
:
s.n..
Gaya MLA
AASHTO, .
"AASHTO M 178-95 (2003) , ASTM C 412M-99 Standard Specification for Concrete Drain Tile (Metric)".
:
s.n.,
.
Diorama.