http://www.aempresarial.com/web/revitem/9_11150_29086.pdf

http://www.ilustrados.com/tema/2130/Documentos-mercantiles.html#TICK

https://www.google.com.pe/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CCgQFjAA&url=http%3A%2F%2Fwww.pdrarequipa.org%2Fsystem%2Ffiles_force%2FPDRArequipa%2Fbiblioteca%2FMujeres-emprendedoras.pdf%3Fdownload%3D1&ei=ME6JUrGZG-nRsAT4qYH4Aw&usg=AFQjCNHo7nGJranzo1cIFuaop9kE-Zwszg

http://tema1rrhhg2.blogspot.com/2008/03/referencia-de-wikipedia-mercado.html

http://fantasticosth.blogspot.com/2010/09/definicion-de-mercado-laboral-y-sus.html