Tolong jelaskan mengenai Bacaan tambahan dari Augustin Bea

Malachi Martin: Three Popes and the Cardinal, Farrar, Straus and Giroux, New York, 1972,

Stjepan Schmidt: Augustin Cardinal Bea: spiritual profile (notes from the Cardinal’s diary), London, Geoffrey Chapman, 1971, 298pp.

Stjepan Schmidt: Augustin Bea, The Cardinal of Unity, New-York, 1992.

Saretta Marotta, La genesi di un ecumenista: la corrispondenza tra Augustin Bea e il vescovo di Paderborn Lorenz Jaeger (1951-1960), in Toward a History of the Desire for Christian Unity. Proceedings of the International Conference at the Monastery of Bose, Lit Verlag 2015, pp. 159–191.

S. Marotta, Ökumene von Unten’: Augustin Bea di fronte alle attività del movimento ,Una Sancta’ in «Cristianesimo nella storia» (2016), pp. 541–611.

S. Marotta, Augustin Bea auf dem Weg zum Ökumeniker, in "Zeitschrift für Kirchengeschichte", 2016/3.