APA (7th ed.) Citation

Ryden, J. C., & Gilligan, S. H. (1987). Continued safe driving: A manual for classroom instructors. The Administration.

Chicago Style (17th ed.) Citation

Ryden, John C., and Stephen H. Gilligan. Continued Safe Driving: A Manual for Classroom Instructors. [Washington, D.C.?]: The Administration, 1987.

MLA (9th ed.) Citation

Ryden, John C., and Stephen H. Gilligan. Continued Safe Driving: A Manual for Classroom Instructors. The Administration, 1987.