APA (7th ed.) Citation

Vatican Council. (1965). De Ecclesia =: Constitution on the Church : November 21, 1964. National Catholic Welfare Conference.

Chicago Style (17th ed.) Citation

Vatican Council. De Ecclesia =: Constitution on the Church : November 21, 1964. Washington, D.C.: National Catholic Welfare Conference, 1965.

MLA (8th ed.) Citation

Vatican Council. De Ecclesia =: Constitution on the Church : November 21, 1964. National Catholic Welfare Conference, 1965.