Braybrooke, David
Random House , 1968
Buku Teks
Vancil, David L
Allyn and Bacon, 1993
Buku Teks
Murphy, Walter F., author
The John Hopkins University Press, 2007
Buku Teks
edited by Brian Doherty and Marius de Geus
Routledge, 1996
Buku Teks
Cadeddu, Davide, author
[Springer, ], 2012
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