Stern, Nancy B., author
Wiley, 1994
Buku Teks
Nyhoff, Larry, author
Prentice-Hall, 1997
Buku Teks
Nolan, Richard L., author
Addison-Wesley, 1971
Buku Teks
Hughes, Joan K., author
John Wiley & Sons, 1981
Buku Teks
Koffman, Elliot B., author
Addison-Wesley, 1981
Buku Teks