Song, S.; Zhang, R.; Alström, P.; Irestedt, M.; Cai, T.; Qu, Y.; Ericson, P.G.P.; Fjeldså, J.; Lei, F. (). „Complete taxon sampling of the avian genus Pica (magpies) reveals ancient relictual populations and synchronous Late-Pleistocene demographic expansion across the Northern Hemisphere”. Journal of Avian Biology. 49 (2): 1–14. doi:10.1111/jav.01612.
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del Hoyo, J.; Collar, N.; Christie, D.A. (). del Hoyo, J.; Elliott, A.; Sargatal, J.; Christie, D.A.; de Juana, E., ed. „Maghreb Magpie (Pica mauritanica)”. Handbook of the Birds of the World Alive. Lynx Edicions. Accesat în .