''Novitates Zoologicae'' vol XVII 1911 Plate 9 Blue-cheeked Bee-eater | American Museum Novitates |
Novitates Zoologicae 20(2), 257–277."The family of Anthribidae of the van de Poll collection which we bought from Messrs. 0. E. Janson & Sons comprises a little over three thousand specimens, most of which came from the Oriental Region".