Information, F. o. I. F. N. B. o. (1921). The Tribute of Empire. Washington, D.C..
Lua i Stíl Chicago (17ú heag.)Information, Friends of Irish Freedom. National Bureau of. The Tribute of Empire. Washington, D.C., 1921.
Lua MLA (8ú heag.)Information, Friends of Irish Freedom. National Bureau of. The Tribute of Empire. Washington, D.C., 1921.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.