Information, F. o. I. F. N. B. o. (1921). The Tribute of Empire. Washington, D.C..
Chicago Style aipamenaInformation, Friends of Irish Freedom. National Bureau of. The Tribute of Empire. Washington, D.C., 1921.
MLA aipamenaInformation, Friends of Irish Freedom. National Bureau of. The Tribute of Empire. Washington, D.C., 1921.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.