Passer predomesticus (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Passer predomesticus" in Spanish language version.

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Johnston y Klitz, 1977, pp. 18–19 Johnston, R. F.; Klitz, W. J. (1977). «Variation and evolution in a granivorous bird: the house sparrow». En Pinowski, Jan; Kendeigh, S. Charles, eds. Granivorous birds in ecosystems: Their evolution, populations, energetics, adaptations, impact and control. International Biological Programme 12. London: Cambridge University Press. pp. 15–51. ISBN 978-0-521-21504-6.
Summers-Smith, 1988, pp. 278–279 Summers-Smith, J. Denis (1988). The Sparrows: a study of the genus Passer. illustrated by Robert Gillmor. Calton, Staffs, England: T. & A. D. Poyser. ISBN 978-0-85661-048-6. (requiere registro).

Markus, Miles B. (December 1964). «Premaxillae of the fossil Passer predomesticus Tchernov and the extant South African Passerinae». Ostrich 35 (4): 245-246. doi:10.1080/00306525.1964.9639423.