Ghillyer, Andrew W., author
McGGraw-Hill Higher education, 2008
Buku Teks
Jackson, Jennifer
Blackwell Publishers, 1996
Buku Teks
Fritzsche, David J., author
McGraw-Hill, 2005
Buku Teks
Desjardins, Joseph, author
McGraw-Hill, 2003
Buku Teks
George, Richard T.
Pearson, 2005
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