Gaya APA

AASHTO, . (2004). ASHTO M 253-03 , ASTM A 490-2 Standard Specification for Heat-Treated Steel Structural Bolts, 150 ksi Minimum Tensile Strength . : s.n..

Gaya MLA

AASHTO, . "ASHTO M 253-03 , ASTM A 490-2 Standard Specification for Heat-Treated Steel Structural Bolts, 150 ksi Minimum Tensile Strength". : s.n., 2004. Diorama.