ARROYO-ARROYO, Samuel Ignacio; MARTINEZ-GUERRERO, José Hugo; PEREDA-SOLIS, Martín Emilio  e  SIERRA-FRANCO, Daniel. First breeding record of grasshopper sparrow in northern Durango, Mexico. Huitzil [online]. 2019, vol.20, n.2.  Epub 30-Mar-2019. ISSN 1870-7459.