Halligan, Fionnuala, author
Chronicle Book, 2013
Buku Referensi
Cooper, Dona, author
Prentice-Hall, 1994
Buku Teks
Field, Syd
Delta Trade Paperbacks, 1994
Buku Teks
Kasprisin, Ron, author
Van Nostrand Reinhold, 1995
Buku Teks
Wills, Graham, author
[, Springer], 2012
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