Gaya APA

Deen, Thomas B.. (1991). Safety research for a changing highway environment . : Piarc.

Gaya Chicago

Deen, Thomas B.. Safety research for a changing highway environment. : Piarc, 1991. Computer Software.

Gaya MLA

Deen, Thomas B.. Safety research for a changing highway environment. : Piarc, 1991. Computer Software.

Gaya Turabian

Deen, Thomas B.. Safety research for a changing highway environment. : Piarc, 1991. Computer Software.