Doyglas J. Davies
Berg, 2002
Buku Teks
Rahner, Karl
The Crossroad Publishing Company, 1981
Buku Referensi
Descrates, Rene
J.M. Dent & Sons , 1949
Buku Teks
Ann Arbor, Michigan : University Microfilms International, 1977-1978-1979-1980-1981-1982-1983-1987-1986
Majalah, Jurnal, Buletin
Lynch, Gordon
Blackwell Publishing, 2005
Buku Teks