Zhang, Z., Huang, Y., James, H.F., Hou, L. (2012). A Marabou (Ciconiidae:Letoptilos) from the Middle Pleistocene of Northeastern China. The Auck 129 (4): 699-706. DOI:10.1525/auk.2012.11227.
Noriega, J.I., Cladera, G. (2008). First Record of an Extinct Marabou Stork in the Neogene of South America. Acta Palaeontologica Polonica 53 (4): 593-600. DOI:10.4202/app.2008.0404.