Bowers, David, author
John Wiley & Sons, 2001
Buku Teks
Robinson, Alice M., author
Prentice-Hall, 1982
Buku Teks
Bodenheimer, Thomas S., author
Appleton & Lange, 1995
Buku Teks
Huth, Edward J., author
William & Wilkins , 1999
Buku Teks
Binns, Colin, author
University of Malaya Press, 2009
Buku Teks