John XXIII, P. (1961). 1961 Christmas message: Address given ... on December 21, 1961. National Catholic Welfare Conference.
Chicago-referens (17:e uppl.)John XXIII, Pope. 1961 Christmas Message: Address Given ... on December 21, 1961. Washington: National Catholic Welfare Conference, 1961.
MLA-referens (8:e uppl.)John XXIII, Pope. 1961 Christmas Message: Address Given ... on December 21, 1961. National Catholic Welfare Conference, 1961.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.