Socialist International (SI). (1951). Report of the First Congress of the Socialist International held at Frankfurt-on-Main: 30 June - 3 July 1951. London: Socialist International.
Chicago Style (17th ed.) CitationSocialist International (SI). Report of the First Congress of the Socialist International Held at Frankfurt-on-Main: 30 June - 3 July 1951. London: Socialist International, 1951.
MLA (8th ed.) CitationSocialist International (SI). Report of the First Congress of the Socialist International Held at Frankfurt-on-Main: 30 June - 3 July 1951. London: Socialist International, 1951.
Warning: These citations may not always be 100% accurate.