BioStor
 | On Birds from the Congo and South-Western Africa (1888) Notes From The Leyden Museum 10: 209-244 |
 | On a New Collection of Birds from South-Western Africa (1889) Notes From The Leyden Museum 11: 65-79 |
 | Neue Vogelarten von Kamerun Y Sjöstedt (1892) Journal für Ornithologie 40(3): 313-314 |
 | Type-specimens of birds in the British Museum (Natural History). Vol. 1 Non-passerines Rachel L M Warren (1966) |