Lawson, Terry, author
John Wiley & Sons, 1996
Buku Teks
White, Paul A., author
Dickenson, 1966
Buku Teks
Anton, Howard, author
John Wiley & Sons, 1984
Buku Teks
Kolman, Bernard, 1932-, author
Macmillan, 1976
Buku Teks
Campbell, Hugh G., author
Prentice-Hall, 1980
Buku Teks