Brown, Gary D., author
John Wiley & Sons, 1977
Buku Teks
McCraken, Daniel D., author
John Wiley & Sons, 1976
Buku Teks
Noll, Paul, author
Mike Murach & Associates, Inc, 1978
Buku Teks
Nickerson, Robert C., author
Little, Brown & Co., 1984
Buku Teks
Ellis, T.M.R., author
Addison-Wesley Pub., 1982
Buku Teks