Oliveros, Carl H.; Moyle, Robert G. (2010). "Origin and diversification of Philippine bulbuls". Molecular Phylogenetics and Evolution54 (3): 822–832. doi:10.1016/j.ympev.2009.12.001. பப்மெட்:19995611.
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Oliveros, Carl H.; Moyle, Robert G. (2010). "Origin and diversification of Philippine bulbuls". Molecular Phylogenetics and Evolution54 (3): 822–832. doi:10.1016/j.ympev.2009.12.001. பப்மெட்:19995611.