アメリカ合衆国の道路標識 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "アメリカ合衆国の道路標識" in Japanese language version.

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Staff (September 19, 2011). “Who Uses the MUTCD? And How?”. Federal Highway Administration. March 16, 2012閲覧。
Staff. “The Shape—and Color—Give Us a Sign”. Federal Highway Administration. April 1, 2009時点のオリジナルよりアーカイブ。April 5, 2009閲覧。
“2009 Edition Part 2 Figure 2C-11. Non-Vehicular Warning Signs”. Manual on Uniform Traffic Control Devices. United States Department of Transportation. June 6, 2012閲覧。
“2009 Edition Chapter 7B. School Signs”. Manual on Uniform Traffic Control Devices. The United States Department of Transportation. 6 June 2012閲覧。

Staff (October 2011). “Chapter 7: Parallel Parking”. Driver's Manual and Study Guide. New York State Department of Motor Vehicles. March 16, 2012閲覧。

Staff. “The Shape—and Color—Give Us a Sign”. Federal Highway Administration. April 1, 2009時点のオリジナルよりアーカイブ。April 5, 2009閲覧。