Fishpool, L. & Tobias, J.: Black-capped Bulbul (Pycnonotus melanicterus). [w:] del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive [on-line]. 2020. [zarchiwizowane z tego adresu (2020-05-10)].
hbw.com
Fishpool, L. & Tobias, J.: Black-capped Bulbul (Pycnonotus melanicterus). [w:] del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive [on-line]. 2020. [zarchiwizowane z tego adresu (2020-05-10)].
