Gaya APA

AASHTO, . (2008). AASHTO R 4-97 (2005). Standard recommended practice for statistical procedures (28th). : AASHTO.

Gaya MLA

AASHTO, . "AASHTO R 4-97 (2005). Standard recommended practice for statistical procedures". 28th : AASHTO, 2008. Diorama.