APA Style

Officials), A, (, A, O, S, H, A, T. (1981). AASHTO interim guide for design of pavement structures 1972, chapter III revised 1981 (1). Washington: AASHTO.

MLA Style

Officials), AASHTO, (American, Association, Of, State, Highway, And, Transportation. "AASHTO interim guide for design of pavement structures 1972, chapter III revised 1981". 1 Washington: AASHTO, 1981. Text.