Gaya APA

UK, The Highways Agency. (1994). Design criteria for portal and cantilever sign/signal gantries . : s.n..

Gaya Chicago

UK, The Highways Agency. Design criteria for portal and cantilever sign/signal gantries. : s.n., 1994. Art Original.

Gaya MLA

UK, The Highways Agency. Design criteria for portal and cantilever sign/signal gantries. : s.n., 1994. Art Original.

Gaya Turabian

UK, The Highways Agency. Design criteria for portal and cantilever sign/signal gantries. : s.n., 1994. Art Original.