Andres, Cameron K., author
Prentice-Hall, 2001
Buku Teks
Smith, Ronald C., author
Prentice-Hall, 1993
Buku Teks
Emmitt, stephen, author
Wiley-Blackwell, 2010
Buku Teks
Fatzinger, James A. S., author
Pearson-Prentice Hall, 2004
Buku Teks
Liebing, Ralph W., author
John Wiley and Sons, 1982
Buku Teks