US. Congress. (1968). Official congressional directory: For the use of the United States Congress ; closing date for compiling directory material, December 15, 1967. United States Government Printing Office.
Citace podle Chicago (17th ed.)US. Congress. Official Congressional Directory: For the Use of the United States Congress ; Closing Date for Compiling Directory Material, December 15, 1967. Washington: United States Government Printing Office, 1968.
Citace podle MLA (9th ed.)US. Congress. Official Congressional Directory: For the Use of the United States Congress ; Closing Date for Compiling Directory Material, December 15, 1967. United States Government Printing Office, 1968.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..