Enciclopedia of Graphic Symbols

www.symbols.com/

Semiotics
www.aber.ac.uk/media/sections/textan07.html

Marxist Media Theory
.http://www.aber.ac.uk/media/Documents/marxism/marxism.html

Ethnographics Press
www.usc.edu/dept/elab/publications/ethno.html

Nombre Falso
www.nombrefalso.com.ar

Instituto Mora de México

www.institutomora.edu.mx