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