APA (7th ed.) Citation

Islam, K., & Williams, R. N. (2000). Red-vented bulbul: Pycnonotus cafer. Red-whiskered bulbul : Pycnonotus jocosus. Birds of North America, Inc..

Chicago Style (17th ed.) Citation

Islam, Kamal, and Richard N. Williams. Red-vented Bulbul: Pycnonotus Cafer. Red-whiskered Bulbul : Pycnonotus Jocosus. Philadelphia, PA: Birds of North America, Inc., 2000.

MLA (9th ed.) Citation

Islam, Kamal, and Richard N. Williams. Red-vented Bulbul: Pycnonotus Cafer. Red-whiskered Bulbul : Pycnonotus Jocosus. Birds of North America, Inc., 2000.