Cita APA (7a ed.)

Juan Pablo II, P. (1969). Crisis in morality: The Vatican speaks out : a series of outstanding articles. United States Catholic Conference.

Cita Chicago Style (17a ed.)

Juan Pablo II, Papa. Crisis in Morality: The Vatican Speaks Out : A Series of Outstanding Articles. Washington, D.C: United States Catholic Conference, 1969.

Cita MLA (9a ed.)

Juan Pablo II, Papa. Crisis in Morality: The Vatican Speaks Out : A Series of Outstanding Articles. United States Catholic Conference, 1969.