Gaya APA

Officials, A, A, O, S, H, A, T. (1996). Guide for Contracting, Selecting, and Managing Consultants in Preconstruction Engineering . America: AASHTO.

Gaya MLA

Officials, American, Assosiation, Of, State, Highway, And, Transportation. "Guide for Contracting, Selecting, and Managing Consultants in Preconstruction Engineering". America: AASHTO, 1996. Text.