Martínez-Guerrero, J.H. et al. 2018. New Locality of the endangered Sierra Madre Sparrow (Xenospiza Baileyi) from the State of Durango, Mexico, and recommendations for its conservation. ACTA ZOOLÓGICA MEXICANA (N.S.). 34, 1 (oct. 2018), 1–6. DOI:https://doi.org/10.21829/azm.2018.3412115.