edited by Craig Donnellan
Independence Educational, 1995
Buku Teks
Harris, Donald, author
Cambridge University Press, 2005
Buku Teks
Lewis, Clive, author
Thomson Reuters, 2009
Buku Teks
Shealy, C. Norman, author
Element, 1998
Buku Referensi
Mizon, Bob, author
[Springer, ], 2012
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