Arnold, David
Routledge, 1994
Buku Teks
Hewitt, James
Wayland, 1979
Buku Teks
Chaunu, Pierre
North-Holland Publishing, 1979
Buku Teks
Cushner, Nicholas P.
Ateneo de Manila University Press, 1966
Buku Teks SO
Cunningham, Chris
Kangaroo Press, 1996
Buku Teks