著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL United States. Congress. House. Committee on Ways and Means and United States. President ( : Johnson),"Thirteenth annual report of the president of the United States on the trade agreements program--1968 : message from the President of the United States transmitting the thirteenth annual report on the trade agreements program, for 1968, pursuant to the provisions of the trade expansion act of 1962",,Congressional Information Service,2000,"U.S. Congressional Committee Publications on GATT & WTO, 1949-1999",,,,https://cir.nii.ac.jp/crid/1130000797770996096