Chukwu, E.N., author
Academic Press, 1992
Buku Teks
Lapatra, J.W.
Charles C. Thomas, 1975
Buku Teks
editor, Donald Watson
McGraw-Hill, 2000
Buku Referensi
Donald Watson, editor
McGraw-Hill, 2000
Buku Referensi
Kolodziej, Joanna, author
[Springer, ], 2012
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