Payne, R. (2017). Chad Firefinch (Lagonosticta umbrinodorsalis). 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 http://www.hbw.com/node/61148 on 9 March 2017).
