Drinking-driving attitudes: a survey of Fairfax County, 1971.

National Highway Traffic Safety Administration, Washington, D.C.

Baseline population survey, Fall 1970.

National Highway Traffic Safety Administration, Washington, D.C.

Nationwide Personal Transportation Survey: 1990 NPTS databook. Volume I.

Federal Highway Administration, Washington, D.C.

Analysis of the spring 1976 telephone survey of community opinion and knowledge.

National Highway Traffic Safety Administration, Office of Driver and Pedestrian Programs, Washington, D.C.