APA

Hughes B., . (1991). Accident predictions at traffic signals. East Perth: Western Australia. Main Roads Department.

Chicago

Hughes BP, . 1991. Accident predictions at traffic signals. East Perth: Western Australia. Main Roads Department.

Harvard

Hughes B., . (1991). Accident predictions at traffic signals. East Perth: Western Australia. Main Roads Department.

MLA

Hughes BP, . Accident predictions at traffic signals. East Perth: Western Australia. Main Roads Department. 1991.