Circuit Cellar – www.cc-webshop.com
Elektor – www.elektor.com
Audio Amateur – www.cc-webshop.com
McGraw-Hill Professional - books.mcgraw-hill.com/cgi-bin/pbg/robots-home.html
Quality Technical Books – http://qtb.com
Robot Room - www.robotroom.com
Square 1 Electronics - www.sq-1.com
