Collin, Serge, author
Prentice-Hall, 1988
Buku Teks
Watson, Hugh J., author
John Wiley & Sons, 1981
Buku Teks
Puzman, Josef, author
John Wiley & Sons, 1980
Buku Teks
edited by Gill Waters
McGraw-Hill, 1991
Buku Teks
Langlois, Patrice, author
Wiley , 2011
Buku Referensi