Lehman, Carol M., author
Thomson South-Western, 2006
Buku Teks
Elex Media Komputindo, 2002
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Sudantha W., author
Elex Media Komputindo, 2002
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Joyce Cox...[et.al]
Microsoft Press, 2007
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Budi Permana, author
Elex Media Komputindo, 2000
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