Shakya, Subir B.; Sheldon, Frederick H. (2017). "The phylogeny of the world's bulbuls (Pycnonotidae) inferred using a supermatrix approach". Ibis. Quyển 159 số 3. tr. 498–509. doi:10.1111/ibi.12464. ISSN0019-1019.
Shakya, Subir B.; Sheldon, Frederick H. (2017). "The phylogeny of the world's bulbuls (Pycnonotidae) inferred using a supermatrix approach". Ibis. Quyển 159 số 3. tr. 498–509. doi:10.1111/ibi.12464. ISSN0019-1019.