Gaya APA

Officials, A, A, O, S, H, A, T. (1998). Standard Specifications for Transfortation Materials and Methode of Sampling and Testing Nintheenth Edition (Ed.:19, Cet.: 1.). Washington D.C: American Assosiation of State Highway and Transfortation Officials.

Gaya MLA

Officials, American, Assosiation, Of, State, Highway, And, Transfortation. "Standard Specifications for Transfortation Materials and Methode of Sampling and Testing Nintheenth Edition". Ed.:19, Cet.: 1. Washington D.C: American Assosiation of State Highway and Transfortation Officials, 1998. Text.