↑ Delacour J. (1943): A revision of the genera and species of the family Pycnonotidae (bulbuls). Zoologica 28(1): 17-28.
↑ Cibois Alice; Slikas Beth; Schulenberg Thomas S. & Pasquet Eric (2001): An endemic radiation of Malagasy songbirds is revealed by mitochondrial DNA sequence data. Evolution 55(6): 1198-1206. DOI:10.1554/0014-3820(2001)055[1198:AEROMS]2.0.CO;2 toàn văn PDFLưu trữ 2006-05-21 tại Wayback Machine
↑ Beresford P.; Barker F.K.; Ryan P.G. & Crowe T.M. (2005): African endemics span the tree of songbirds (Passeri): molecular systematics of several evolutionary 'enigmas'. Proceedings of the Royal Society 272(1565): 849–858. doi:10.1098/rspb.2004.2997toàn văn PDFphụ lục[liên kết hỏng]
↑ Pasquet Éric; Han Lian-Xian; Khobkhet Obhas & Cibois Alice (2001): Towards a molecular systematics of the genus Criniger, and a preliminary phylogeny of the bulbuls (Aves, Passeriformes, Pycnonotidae). Zoosystema 23(4): 857-863. toàn văn PDFLưu trữ 2009-08-16 tại Wayback Machine
↑ Moyle Robert G. & Marks Ben D. (2006): Phylogenetic relationships of the bulbuls (Aves: Pycnonotidae) based on mitochondrial and nuclear DNA sequence data. Molecular Phylogenetics and Evolution 40(3): Trang 687-695. doi:10.1016/j.ympev.2006.04.015 (tóm tắt HTML)
