Bussche, J. v. (1991). Ignatius George Spencer, Passionist (1799-1864): Crusader of prayer for England and pioneer of ecumenical prayer. University Press : Peeters.
Chicago-viite (17. p.)Bussche, Jozef vanden. Ignatius George Spencer, Passionist (1799-1864): Crusader of Prayer for England and Pioneer of Ecumenical Prayer. Leuven: University Press : Peeters, 1991.
MLA-viite (8. p.)Bussche, Jozef vanden. Ignatius George Spencer, Passionist (1799-1864): Crusader of Prayer for England and Pioneer of Ecumenical Prayer. University Press : Peeters, 1991.
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