Gaya APA

Officials, A, A, O, S, H, A, T. (1997). Guide for Commonly Recognized (CoRe) Structural Elements . : AASHTO.

Gaya MLA

Officials, American, Assosiation, Of, State, Highway, And, Transfortation. "Guide for Commonly Recognized (CoRe) Structural Elements". : AASHTO, 1997. Text.