Nicolás Guillén

http://en.wikipedia.org/wiki/Nicol%C3%A1s_Guill%C3%A9n

http://www.britannica.com/EBchecked/topic/248753/Nicolas-Guillen
http://www.peepaltreepress.com/author_display.asp?au_id=130
http://www.enotes.com/nicolas-guillen-criticism/guillen-nicolas
http://www.nathanielturner.com/nicolasguillen.htm
http://mtmkobbe.blogspot.ca/2012/05/nicolas-guillen-first-west-indian.html#!/2012/05/nicolas-guillen-first-west-indian.html