Gaya APA

AASHTO, . (2008). AASHTO M 145 - 91 (2004) Standard specification for classification of soils and soil aggregate mixtures for highway construction purposes (28th). : AASHTO.

Gaya MLA

AASHTO, . "AASHTO M 145 - 91 (2004) Standard specification for classification of soils and soil aggregate mixtures for highway construction purposes". 28th : AASHTO, 2008. Diorama.