Carboneras, C. & Kirwan, G.M. (2019). Ferruginous Duck (Aythya nyroca). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the
World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/52908 on 4 July 2019).