British Ornithologists' Club. et British Ornithologists' Club, Bulletin of the British Ornithologists' Club, vol. 21, British Ornithologists' Club, (lire en ligne)
boc-online.org
(en) H. D. Jackson, « The taxonomic status of Rwenzori Nightjar Caprimulgus ruwenzorii Ogilvie-Grant, 1909, and Benguela Nightjar C. koesteri Neumann, 1931 », British Ornithologists' club Bulletin, (lire en ligne)