Skead, C. J. (1965). Birds of the Albany (Grahamstown) District. Percy FitzPatrick Institute of African Ornithology.
Lua i Stíl Chicago (17ú heag.)Skead, C. J. Birds of the Albany (Grahamstown) District. [Rondebosch, C.P., South Africa]: Percy FitzPatrick Institute of African Ornithology, 1965.
Lua MLA (8ú heag.)Skead, C. J. Birds of the Albany (Grahamstown) District. Percy FitzPatrick Institute of African Ornithology, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.