Maritain, Jacques
The University of Chicago Press, 1951
Buku Teks
Bunbongkarn, Suchit
Institute of southeast Asian studies, 1996
Buku Teks
Rivera, Temario C.
Institute of Southeast Asia studies, 1996
Buku Teks
Aaron, David, author
Pan Books, 1989
Buku Teks
Vincent, Andrew
Basil Blackwell, 1987
Buku Teks