Place, Wayne
John Wiley & Sons, 2007
Buku Teks
Place, Jeffrey Wayne
John Wiley & Son, 2007
Multimedia
Hornung, William J.
Prentice-Hall, 1981
Buku Teks
Bovill, Carl, author
Van Nostrand Reinhold, 1991
Buku Teks
Butler, Robert Brown, author
McGraw-Hill, 1984
Buku Referensi