United States. Dept. of Transportation. Office of the Assistant Secretary for Policy, Plans, and International Affairs. Summary of national transportation statistics. U.S. Dept. of Transportation, Office of the Secretary, Assistant Secretary for Policy, Plans, and International Affairs; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Chicagoスタイル(17版)引用形式United States. Dept. of Transportation. Office of the Assistant Secretary for Policy, Plans, and International Affairs. Summary of National Transportation Statistics. Washington: U.S. Dept. of Transportation, Office of the Secretary, Assistant Secretary for Policy, Plans, and International Affairs; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
MLA(8版)引用形式United States. Dept. of Transportation. Office of the Assistant Secretary for Policy, Plans, and International Affairs. Summary of National Transportation Statistics. U.S. Dept. of Transportation, Office of the Secretary, Assistant Secretary for Policy, Plans, and International Affairs; for sale by the Supt. of Docs., U.S. Govt. Print. Off.