Jelaskan Nota kaki dari Sapayoa dalam bahasa melayu

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Fjeldså, Jon; Zuccon, Dario; Irestedt, Martin; Johansson, Ulf S. & Ericson, Per G.P. (2003). Sapayoa aenigma: a New World representative of 'Old World suboscines'. Proc. R. Soc. B 270(Supplement 2): 238–241.  PDF fulltext Electronic supplement

Irestedt, M.; Ohlson, J.I.; Zuccon, Dario; Källersjö, M. & Ericson, Per G.P. (2006). Nuclear DNA from old collections of avian study skins reveals the evolutionary history of the Old World suboscines (Aves: Passeriformes).  Zool. Scripta 35(6): 567–580.  PDF fulltext

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Remsen, J. V., Jr.; Cadena, C. D.; Jaramillo, A.; Nores, M.; Pacheco, J. F. Robbins, M. B.; Schulenberg, T. S., Stiles, F. G.; Stotz, D. F.; & Zimmer, K. J. Version (2009). A classification of the bird species of South America. American Ornithologists' Union. HTML full text

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