Voelker, Gary (1999). "Dispersal, Vicariance, and Clocks: Historical Biogeography and Speciation in a Cosmopolitan Passerine Genus (Anthus: Motacillidae)". Evolution. 53 (5): 1536–1552. doi:10.2307/2640899. JSTOR2640899. PMID28565564.
Foggo, M. N.; Hitchmough, R. A.; Daugherty, C. H. (1997). "Systematic and conservation implications of geographic variation in pipits (Anthus: Motacillidae) in New Zealand and some offshore islands". Ibis. 139 (2): 366–373. doi:10.1111/j.1474-919X.1997.tb04635.x.
Randler, C (2006). "Is tail wagging in white wagtails, Motacilla alba, an honest signal of vigilance?". Animal Behaviour. 71 (5): 1089–1093. doi:10.1016/j.anbehav.2005.07.026. S2CID53189368.
Voelker, Gary (1999). "Dispersal, Vicariance, and Clocks: Historical Biogeography and Speciation in a Cosmopolitan Passerine Genus (Anthus: Motacillidae)". Evolution. 53 (5): 1536–1552. doi:10.2307/2640899. JSTOR2640899. PMID28565564.
nih.gov
pubmed.ncbi.nlm.nih.gov
Voelker, Gary (1999). "Dispersal, Vicariance, and Clocks: Historical Biogeography and Speciation in a Cosmopolitan Passerine Genus (Anthus: Motacillidae)". Evolution. 53 (5): 1536–1552. doi:10.2307/2640899. JSTOR2640899. PMID28565564.
Randler, C (2006). "Is tail wagging in white wagtails, Motacilla alba, an honest signal of vigilance?". Animal Behaviour. 71 (5): 1089–1093. doi:10.1016/j.anbehav.2005.07.026. S2CID53189368.