http://en.wikipedia.org/wiki/List_of_DOS_commands

http://www.computerhope.com/msdos.htm

http://www.easydos.com/dosindex.html

http://www.computerhope.com/overview.htm

http://www.escotal.com/doscommands.html

http://www.colorado.edu/geography/gcraft/tips/doshelp.html

http://elsa.berkeley.edu/sst/basic.dos.html

http://www.jegsworks.com/Lessons/reference/doscommands.htm

http://labnol.blogspot.com/2006/04/useful-windows-xp-dos-commands-tricks.html

http://www.windowsvistauserguide.com/vista_dos_commands.htm

http://www.computing.net/answers/dos/dos-commands/6216.html

http://home.att.net/~gobruen/progs/dos_batch/dos_intro.html

http://www.infocellar.com/winxp/DOS-with-XP.htm

http://kb.wisc.edu/helpdesk/page.php?id=903

http://www.dewassoc.com/support/msdos/dos_commands.htm

http://www.nmsu.edu/~CANTO/DOCS/PC/DOCS.pc_dos.html

http://www.netstrider.com/tutorials/DOS/index.html

http://www.uninets.net/~blaisdel/DOS.htm

http://www.felgall.com/dosref.htm

http://www.yolinux.com/TUTORIALS/unix_for_dos_users.html