Iyan Robiansyah, author
University of East Anglia, Norwich. School of Environmental Sciences, 2015
Artikel Jurnal
Riupassa, Pieter Agusthinus, author
Artikel Jurnal
STAID, BBPT, 1993
Buku Referensi
FMIPA-UI,
Majalah, Jurnal, Buletin
National Academy Press , 1983
Buku Teks