John XXIII, P. (1961). The Holy Father speaks to athletes. National Catholic Welfare Conference.
Lua i Stíl Chicago (17ú heag.)John XXIII, Pope. The Holy Father Speaks to Athletes. Washington: National Catholic Welfare Conference, 1961.
Lua MLA (8ú heag.)John XXIII, Pope. The Holy Father Speaks to Athletes. National Catholic Welfare Conference, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.