Morrison, Joline
Course Technology, 1998
Buku Teks
Atwood, Margaret
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Buku Teks
Dawe, Charles W.
Little, Brown and Company, c1984
Buku Teks
Hutabarat, Bernaridho I.
Andi , 2004
Buku Teks
Kyte, Thomas
McGraw-Hill, 2003
Buku Teks