Higgins, G. G. (1979). Labor Day Statement, 1979. Washington, D.C..
Lua i Stíl Chicago (17ú heag.)Higgins, George G. Labor Day Statement, 1979. Washington, D.C., 1979.
Lua MLA (8ú heag.)Higgins, George G. Labor Day Statement, 1979. Washington, D.C., 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.