Colman, James, author
Angus and Robertson, 1971
Buku Teks
New Century Press Pty. Ltd, 1970
Majalah, Jurnal, Buletin
Bowhill, Bruce, author
John Wiley & Sons, 2008
Buku Teks
Eddy Husnizal, author
UN-HABITAT, 2008
Buku Teks
Corburn, jason, author
The Mitt Press, 2009
Buku Teks