APA (7th ed.) Citation

Witheford, D. K. (1970). Speed enforcement policies and practice. Eno Foundation for Transportation.

Chicago Style (17th ed.) Citation

Witheford, David K. Speed Enforcement Policies and Practice. Saugatuck, Conn: Eno Foundation for Transportation, 1970.

MLA (9th ed.) Citation

Witheford, David K. Speed Enforcement Policies and Practice. Eno Foundation for Transportation, 1970.