References:


http://www.facebook.com/groups/143668232454635/


http://www.bbc.co.uk/learningzone/clips/martha-graham-style-technique-and-choreography/10750.html


http://uk.answers.yahoo.com/question/index?qid=20071126082205AAxOgG1
Source: Pérez, J., 1995, "Yerma: Overview" in Reference Guide to World Literature, 2nd ed., edited by Lesley Henderson, St. James Press.


http://www.youtube.com/watch?v=7lI33Qz1VLg


http://yermedea.blogspot.co.uk/2012_08_01_archive.html