John XXIII, P. (1961). St. Joseph = the worker: Pope John's message to workers May 1, 1960. National Catholic Welfare Conference.
Lua i Stíl Chicago (17ú heag.)John XXIII, Pope. St. Joseph = the Worker: Pope John's Message to Workers May 1, 1960. Washington: National Catholic Welfare Conference, 1961.
Lua MLA (8ú heag.)John XXIII, Pope. St. Joseph = the Worker: Pope John's Message to Workers May 1, 1960. National Catholic Welfare Conference, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.