Gaya APA

AASHTO, . (2005). AASHTO M 207M-04 , ASTM C 507M-02 Standard Specificataion for Reinforced Concrete Elliptical Culvert, Storm Drain, and Sewer Pipe (Metric) . : s.n..

Gaya MLA

AASHTO, . "AASHTO M 207M-04 , ASTM C 507M-02 Standard Specificataion for Reinforced Concrete Elliptical Culvert, Storm Drain, and Sewer Pipe (Metric)". : s.n., 2005. Diorama.