Blackwell Publishing, 2003
Buku Teks
American Planning Association ; editor, Frederick R. Steiner, Kent Butler
John Wiley & Sons, 2007
Buku Teks
Brown, A.J.
Melbourne University Press, 1951
Buku Teks
Gillie, F.B.
The Hague, 1971
Buku Teks
Greed, Clara H.
Longman, 1994
Buku Teks