- http://www.art.net/~hopkins/Don/lang/forth.html
- http://www.findinglisp.com/blog/2008/06/forth-timelessness-redux.html
- http://yosefk.com/blog/my-history-with-forth-stack-machines.html
- http://galileo.phys.virginia.edu/classes/551.jvn.fall01/primer.htm
- http://www.softsynth.com/pforth/pf_tut.php
- http://c2.com/cgi/wiki?ForthLanguage