Arya, Atam Parkash
Addison-Wesley, 1974
Buku Teks
Name, F. W. van, author
Prentice-Hall, 1966
Buku Teks
Krane, Kenneth S., author
John Wiley & Sons, 1983
Buku Teks
Blatt, Frank J., author
McGraw-Hill, 1992
Buku Teks
Wilson, Harold Albert, author
Blackie & Sons, 1959
Buku Teks