Cawkell, Tony
Routledge, 1996
Buku Referensi
Dowling, Jennifer Coleman
McGraw-Hill, 2012
Buku Teks
edited by Henk M. Blanken ... [and others]
Springer, 2007
Buku Teks
Walters, Rob
Artech House, Inc., 1995
Buku Teks
Vaughan, Tay
Osborne McGraw-Hill, 1997
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