John XXIII, P. (1961). The Holy Father speaks to athletes. National Catholic Welfare Conference.
Cita Chicago Style (17a ed.)John XXIII, Pope. The Holy Father Speaks to Athletes. Washington: National Catholic Welfare Conference, 1961.
Cita MLA (8a ed.)John XXIII, Pope. The Holy Father Speaks to Athletes. National Catholic Welfare Conference, 1961.
Precaución: Estas citas no son 100% exactas.