APA (7th ed.) Citation

Paul VI, P. (1964). Letter to Paolo Cardinal Marella on New York World's Fair. National Catholic Welfare Conference.

Chicago Style (17th ed.) Citation

Paul VI, Pope. Letter to Paolo Cardinal Marella on New York World's Fair. Washington, D.C.: National Catholic Welfare Conference, 1964.

MLA (8th ed.) Citation

Paul VI, Pope. Letter to Paolo Cardinal Marella on New York World's Fair. National Catholic Welfare Conference, 1964.