Southern Ground-Hornbill (Bucorvus leadbeateri) in captivity at Kuala Lumpur Bird Park, Kuala Lumpur, Malaysia. Photographed on 8 July 2005.www.inaturalist.org/observations/54217049
A monograph of the Bucerotid, or family of the hornbills..[London]Published for the subscribers by the author [printed by Taylor and Francis]1882..biodiversitylibrary.org/page/38534721