Machado Chaviano, E., & 		Hernández Aro, Y.
(2008).
 .
<em>El Periplo Sustentable, </em>(15), 111-122.
Retrieved from <a href="https://rperiplo.uaemex.mx/article/view/5046" target="_new">https://rperiplo.uaemex.mx/article/view/5046</a>