Rockwell, T. H., Ernst, R. L., & Rulon, M. J. (1970). Visual requirements in night driving. Highway Research Board, National Research Council.
Chicago-referens (17:e uppl.)Rockwell, Thomas Hugh, Ronald L. Ernst, och Michael J. Rulon. Visual Requirements in Night Driving. Washington, D.C: Highway Research Board, National Research Council, 1970.
MLA-referens (9:e uppl.)Rockwell, Thomas Hugh, et al. Visual Requirements in Night Driving. Highway Research Board, National Research Council, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.