Berndt, Ronald M., author
F.W. Cheshire, 1951
Buku Teks
edited by J. Beaumont
The Federaion Press, 1993
Buku Teks
Pope, David, author
ASEAN-Australia Joint Research Project , 1985
Buku Teks
Currebcy Press, 1992
Buku Teks
edited, Judy Giles, Tim Middleton
Routledge, 1995
Buku Teks