Birch, L. (1968). The History of the T.U.C. 1868-1968: A pictorial survey of a social revolution. General Council of the Trades Union Congress.
Lua i Stíl Chicago (17ú heag.)Birch, Lionel. The History of the T.U.C. 1868-1968: A Pictorial Survey of a Social Revolution. London: General Council of the Trades Union Congress, 1968.
Lua MLA (8ú heag.)Birch, Lionel. The History of the T.U.C. 1868-1968: A Pictorial Survey of a Social Revolution. General Council of the Trades Union Congress, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.