VALDERRAMA MARTÍNEZ, Jorge Antonio; 						VELÁZQUEZ ROMERO, María Guadalupe.
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<strong>El Periplo Sustentable</strong>, [S.l.], n. 14, p. 45-64, jan. 2008.
ISSN 1870-9036.
Available at: &lt;<a href="https://rperiplo.uaemex.mx/article/view/5051" target="_new">https://rperiplo.uaemex.mx/article/view/5051</a>&gt;. Date accessed: 26 sep. 2026.