@book{7769,
	author = {Joannes},
	title = {Letter of his Holines Pope John XXIII to the Most Reverend Ordinaries and Major Superiors of the Religious Congregations of the Church in the United States (April 21, 1963)},
	publisher = {National Catholic Welfare Conference},
	year = {1961.},
	address = {Washington, D. C.}
}