Gaya APA

AASHTO, . (2004). AASHTO M 242M-04 , ASTM C 655M-02 Standard Specification for Reinforced Concrete D-Load Culvert, Storm Drain, and Sewer Pipe (Metric) . : s.n..

Gaya MLA

AASHTO, . "AASHTO M 242M-04 , ASTM C 655M-02 Standard Specification for Reinforced Concrete D-Load Culvert, Storm Drain, and Sewer Pipe (Metric)". : s.n., 2004. Diorama.