APA

Zegeer C., Havens J. & Deen R. (1976). Speed reduction in school zones. ( Abridgement). : Transportation Research Record.

Chicago

Zegeer CV, Havens JH and Deen RC. 1976. Speed reduction in school zones. ( Abridgement). : Transportation Research Record.

Harvard

Zegeer C., Havens J. and Deen R. (1976). Speed reduction in school zones. ( Abridgement). : Transportation Research Record.

MLA

Zegeer CV, Havens JH and Deen RC. Speed reduction in school zones. ( Abridgement). : Transportation Research Record. 1976.