Cox, D.R. (David Roxbee)
Renewal theory
Science Paparbacks and Methuen, 1962
 Buku Teks
Follett, ken
Edge of eternity
Pan Books, 2014
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Miller, William C.
The creative edge
Addison-Wesley, 1990
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Pascale, Richard Tanner
MANAGING ON THE EDGE
Schuster Inc., 1991
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Holl, Steven
Edge of a city
Princeton Architectural Press, 1991
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