APA (7th ed.) Citation

United States Historical Documents Institute. (1973). Transportation periodicals directory, 1921-1971: An alphabetical listing of the 2,000 current and discontinued international periodicals abstracted and indexed in the microfilm editions of Transportation masterfile, 1921-1971, and the Urban transportation information system, 1921-1971 : index volume II. U.S. Historical Documents Institute.

Chicago Style (17th ed.) Citation

United States Historical Documents Institute. Transportation Periodicals Directory, 1921-1971: An Alphabetical Listing of the 2,000 Current and Discontinued International Periodicals Abstracted and Indexed in the Microfilm Editions of Transportation Masterfile, 1921-1971, and the Urban Transportation Information System, 1921-1971 : Index Volume II. Washington: U.S. Historical Documents Institute, 1973.

MLA (9th ed.) Citation

United States Historical Documents Institute. Transportation Periodicals Directory, 1921-1971: An Alphabetical Listing of the 2,000 Current and Discontinued International Periodicals Abstracted and Indexed in the Microfilm Editions of Transportation Masterfile, 1921-1971, and the Urban Transportation Information System, 1921-1971 : Index Volume II. U.S. Historical Documents Institute, 1973.