edited by David R. Patrick
Van Nostrand Reinhold, 1994
Buku Referensi
Devinny, Joseph S., author
Lewis Publishers, 1999
Buku Teks
Heihnson, Robert Jennings, author
Prentice-Hall, 1999
Buku Teks
Laws, Edward A., author
John Wiley & Sons, 1981
Buku Teks
Laws, Edward A., author
John Wiley & Sons, 2000
Buku Teks