Ellis, T.M.R., author
Addison-Wesley Pub., 1982
Buku Teks
Litecky, Charles R., author
McGraw-Hill , 1987
Buku Teks
Gilman, Leonard, author
John Wiley & Sons, 1983
Buku Teks
Grauer, Robert T.
Prentice-Hall, 1978
Buku Teks
Culwin, Fintan, author
Prentice-Hall, 1998
Buku Teks