APA

Northwestern University, Traffic Institute & Publication 554. (1988). Stopping and approaching the traffic violator. Evanston, IL: Northwestern University.

Chicago

Northwestern University, Traffic Institute and Publication 554. 1988. Stopping and approaching the traffic violator. Evanston, IL: Northwestern University.

Harvard

Northwestern University, Traffic Institute and Publication 554. (1988). Stopping and approaching the traffic violator. Evanston, IL: Northwestern University.

MLA

Northwestern University, Traffic Institute and Publication 554. Stopping and approaching the traffic violator. Evanston, IL: Northwestern University. 1988.