Cunningham, Lawrence S., author
Harcourt Brace College Publisher, 1994
Buku Teks
Departemen Kesehatan Indonesia
Departemen Kesehatan, 1998
Buku Teks
Clout, hugh D
Pergamon Press, 1977
Buku Teks
Hough, Michael, author
Research Office Research and Statistics Directorate, 1998
Buku Teks
edited by Japanese Government Team for Safeguarding Angkor (JSA)
Japan International Cooperation Center, 1998
Buku Referensi