http://www.ericmorris.com/homepage.html

http://www.spolin.com/index.html

http://trianglespolinplayers.org/about_spolin.html

http://www.keithjohnstone.com/

http://www.improv.org/resources/iti.htm

http://www.abs-cbn.com/starcinema/directors_bios/p_gallaga/p_gallaga.html

http://www.inq7.net/ent/2003/jan/29/ent_22-1.htm

http://www.crossingnegros.org