APA

Department of the Environment, . (1976). Study of some methods of traffic restraint. RR nr 14. London: Department of the Environment.

Chicago

Department of the Environment, . 1976. Study of some methods of traffic restraint. RR nr 14. London: Department of the Environment.

Harvard

Department of the Environment, . (1976). Study of some methods of traffic restraint. RR nr 14. London: Department of the Environment.

MLA

Department of the Environment, . Study of some methods of traffic restraint. RR nr 14. London: Department of the Environment. 1976.