APA

Dudek C., Hutchingson R. & Ritch G. (1974). Evaluation of a prototype safety warning system on the Gulf freeway. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 165-13.

Chicago

Dudek CL, Hutchingson RD and Ritch GP. 1974. Evaluation of a prototype safety warning system on the Gulf freeway. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 165-13.

Harvard

Dudek C., Hutchingson R. and Ritch G. (1974). Evaluation of a prototype safety warning system on the Gulf freeway. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 165-13.

MLA

Dudek CL, Hutchingson RD and Ritch GP. Evaluation of a prototype safety warning system on the Gulf freeway. College Station, TX: Texas A&M University. Texas Transportation Institute. RR nr 165-13. 1974.