Todd, David Keith, author
John Wiley & Sons, 1980
Buku Teks
Huisman, L.
Pitman Advanced Publishing Program, 1983
Buku Teks
Willis, Robert
Prentice-Hall, 1987
Buku Teks
Todd, David Keith, author
John Wiley & Sons, 2005
Buku Teks
Bouwer, Herman
McGraw-Hill, 1978
Buku Teks