Field and laboratory studies of warning symbol sign legibility distance /
by Frances A. Greene ; with contributions by Rodger J. Koppa ... [et al.].

APA Citation

Koppa, R. J., Greene, F. A., University Transportation Centers Program (U.S.)., Southwest Region University Transportation Center (U.S.)., Texas Transportation Institute. (1995). Field and laboratory studies of warning symbol sign legibility distance. College Station: Southwest Region University Transportation Center, Texas Transportation Institute, Texas A&M University System.

MLA Citation

Texas Transportation Institute, et al.. Field And Laboratory Studies of Warning Symbol Sign Legibility Distance. College Station: Southwest Region University Transportation Center, Texas Transportation Institute, Texas A&M University System, 1995.