Gaya APA

Officials, T, A, A, O, S, H, A, T. (1982). Standard specifications for transportation materials and methods of sampling and testing: methods of sampling and testing (II) (13th ed.). Washington: AASHTO.

Gaya MLA

Officials, The, American, Association, Of, State, Highway, And, Transportation. "Standard specifications for transportation materials and methods of sampling and testing: methods of sampling and testing (II)". 13th ed. Washington: AASHTO, 1982. Text.