Martínez-Vilalta, Albert; Motis, Anna (1992). «Family Ardeidae (herons)». En del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi, eds. Handbook of the Birds of the World. Volume 1: Ostriches to Ducks. Barcelona: Lynx Edicions. pp. 376–403. ISBN978-84-87334-10-8.
Post, R.; Post, C.; F. Walsh (2009). «Little egret (Egretta garzetta) and grey heron (Ardea cinerea) Using Bait for Fishing in Kenya». Waterbirds32 (3): 450-452. S2CID85622885. doi:10.1675/063.032.0311.
Dinsmore, James J. (1973). «Foraging Success of Cattle Egrets, Bubulcus ibis». American Midland Naturalist89 (1): 242-246. JSTOR2424157. doi:10.2307/2424157.
Dinsmore, James J. (1973). «Foraging Success of Cattle Egrets, Bubulcus ibis». American Midland Naturalist89 (1): 242-246. JSTOR2424157. doi:10.2307/2424157.
Post, R.; Post, C.; F. Walsh (2009). «Little egret (Egretta garzetta) and grey heron (Ardea cinerea) Using Bait for Fishing in Kenya». Waterbirds32 (3): 450-452. S2CID85622885. doi:10.1675/063.032.0311.