Koppa, R. J., & Higgins, L. L. (1994). Bus route guidance information design: A manual for bus and light rail transit systems. Texas Transportation Institute.
Chicago Style (17th ed.) CitationKoppa, Rodger J., and Laura L. Higgins. Bus Route Guidance Information Design: A Manual for Bus and Light Rail Transit Systems. College Station, Tex.: Texas Transportation Institute, 1994.
MLA (9th ed.) CitationKoppa, Rodger J., and Laura L. Higgins. Bus Route Guidance Information Design: A Manual for Bus and Light Rail Transit Systems. Texas Transportation Institute, 1994.
Warning: These citations may not always be 100% accurate.