del Hoyo, J., Collar, N. & Kirwan, G. M. (2014). Black-legged Parrot (Pionites xanthomerius). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D. A. & de Juana, E. (eds.) (2014). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/467506 [Архівовано 2023-03-05 у Wayback Machine.] on 24 October 2015)
web.archive.org
del Hoyo, J., Collar, N. & Kirwan, G. M. (2014). Black-legged Parrot (Pionites xanthomerius). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D. A. & de Juana, E. (eds.) (2014). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/467506 [Архівовано 2023-03-05 у Wayback Machine.] on 24 October 2015)
