Siegel, Gwathmey, author
Rockport Publishers, 1995
Buku Teks
Crosbie, Michael J., author
Rockport Publishers, 1998
Buku Teks
Gluck, Peter L., author
Rockport Publishers, 1997
Buku Teks
Trulove, James Grayson, author
Collin Design, An imprint of harperCollin Publisher, 2005
Buku Teks
Phoenix Publishing Limited, 2011
Buku Referensi