Ouellette, Robert J., author
Prentice-Hall, 1997
Buku Teks
Stoker, H. Stephen, author
Allyn and Bacon, 1991
Buku Teks
Solomon, Sally
McGraw-Hill, 1987
Buku Teks
Timberlake, Karen C., author
Prentice-Hall, 2007
Buku Teks
Carey, Francis A., 1937-
McGraw-Hill, 2003
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