Horton, Sarah, author
Yale University Press, 2000
Buku Teks
Frost, Raymond, 1960-, author
Pearson Prentice Hall, 2001
Buku Teks
Evans, Joyce J., author
John Wiley & Sons, 2003
Buku Teks
Williams, Robin, author
Peachpit Press, 2000
Buku Teks
Williams, Robin, author
Peachpit Press, 2000
Buku Teks