Gaya APA

AASHTO, . (2002). 2002 Interim to Standard Specifications for Strcututal Supports for Highways Signs, Luminaires and Traffic Signals . America: AASHTO.

Gaya MLA

AASHTO, . "2002 Interim to Standard Specifications for Strcututal Supports for Highways Signs, Luminaires and Traffic Signals". America: AASHTO, 2002. Art Original.