Oxford University Press, 1990
Buku Referensi
Lacey, Alan Robert
Routledge, 1986
Buku Referensi
Lacey, Alan Robert
Routledge, 1996
Buku Referensi
Kemp, David D.
Routledge, 1998
Buku Referensi
Rahner, Karl
The Crossroad Publishing Company, 1981
Buku Referensi