↑ Walther, B; Jones, P (2008). "Family Oriolidae (Orioles and Figbirds)]". In Josep, del Hoyo; Andrew, Elliott; David, Christie. Handbook of the Birds of the World. Volume 13, Penduline-tits to Shrikes. Barcelona: Lynx Edicions. pp. 692–713. ISBN 978-84-96553-45-3.
↑ Walters, Michael P. (1980). Complete Birds of the World. David & Charles PLC. ISBN 0715376667.
