Rujukan Fon_Siri_FHWA

  1. ↑ Loutzenheiser, D.W. "Design of signs for the Pentagon road network." Proceedings of the Highway Research Board, 1943, pp. 206-35.
  2. ↑ Forbes, Theodore W, Moskowitz, Karl, and Morgan, Glen. "A comparison of lower case and capital letters for highway signs." Proceedings of the Highway Research Board, 1950, pp. 355-373.
  3. ↑ Moeur, Richard (2005-04-22). "Sign Typefaces". Manual of Traffic Signs. Dicapai 2006-05-18. 
  4. 1 2 Yaffa, Joshua (August 11, 2007), "The Road to Clarity", The New York Times Magazine, dicapai 11 August 2007 .