Dale, Margaret, author
Gramedia, 2003
Buku Teks
United Nations Centre for Human Settlements (Habitat), 1991
Buku Referensi
Lendrum, Tony, author
McGraw-Hill, 1995
Buku Referensi
Perry, William E., author
John Wiley & Sons, 1981
Buku Teks
by Peter Brophy [and others]
Brookfield, Vt. Gower , 1990
Buku Teks