Murray, William D.
Prentice-Hall, 1990
Buku Teks
Freedman, M. David
John Wiley & Sons, 1972
Buku Teks SO
Freedman, M. David
John Wiley & Sons, 1972
Buku Teks SO
Baase, Sara
Addison-Wesley, 1988
Buku Teks
edited by J. Blank and M.J. Krijger
John Wiley & Sons, 1983
Buku Teks