Colman, James, author
Angus and Robertson, 1971
Buku Teks
edited by Andrew Blowers and Bob Evans
Routledge, 1997
Buku Teks
Webster, Donald H., author
Harper & Row , 1958
Buku Teks
Sandercock, Leonie
John Wiley & Sons, 1998
Buku Teks
Meier, Richard L., author
The Massachusett Institute of Technology, 1974
Buku Teks