^ 1.01.1BirdLife International. Rhabdotorrhinus leucocephalus. The IUCN Red List of Threatened Species2020: e.T22682522A184689600. [2023-11-01]. doi:10.2305/IUCN.UK.2020-3.RLTS.T22682522A184689600.en.
^CITES. Appendices (PDF). Convention on International Trade in Endangered Species of Wild Fauna and Flora Main navigation. [2023-06-24]. (原始内容 (PDF)于2023-07-02) (英语).
^ 4.04.1Datta, A.; Clark, J.; Patil, I.; Brouwer, K.; Taylor, J. Writhed Hornbill (Rhabdotorrhinus leucocephalus) - BirdLife species factsheet. BirdLife Data Zone. [2023-11-01]. (原始内容于2023-08-26) (英语).
^ 5.05.15.25.35.45.55.65.75.8del Hoyo, Josep; Elliott, Andrew; Sargatal, Jordi (编). Handbook of the birds of the world6. Barcelona: Lynx Edicions. 2001: 512 [2023-11-01]. ISBN 978-84-87334-30-6(英语). 含有內容需登入查看的頁面 (link)
^Vieillot, Louis Jean Pierre. Nouveau dictionnaire d'histoire naturelle, appliquée aux arts, à l'agriculture, à l'économie rurale et domestique, à la médecine, etc Nouv. éd. presqu' entièrement refondue et considérablement angmentée. Chez Deterville. 1816 [2023-11-01]. (原始内容于2023-11-01) (法语).
^Kauth, M.; Engel, S.; Lastimoza, L. L.; Curio, E. Observations on the breeding biology of the Writhed-billed Hornbill (Aceros waldeni) in the Philippines. Journal für Ornithologie. 1998-10-01, 139 (4): 475–483 [2023-11-01]. ISSN 1439-0361. doi:10.1007/BF01653471. (原始内容于2018-06-07) (英语).
^Gonzalez, Juan-Carlos T.; Sheldon, Ben C.; Collar, Nigel J.; Tobias, Joseph A. A comprehensive molecular phylogeny for the hornbills (Aves: Bucerotidae). Molecular Phylogenetics and Evolution. 2013-05-01, 67 (2): 468–483 [2023-11-01]. ISSN 1055-7903. doi:10.1016/j.ympev.2013.02.012.
^ 9.09.1Jobling, James A. The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. 2010. ISBN 978-1-4081-2501-4(英语).
^ 10.010.1Tobias, Joseph A.; Sheard, Catherine; Pigot, Alex L.; Devenish, Adam J. M.; Yang, Jingyi; et al. AVONET: morphological, ecological and geographical data for all birds. Ecology Letters. 2022-03, 25 (3): 581—597 [2023-07-22]. doi:10.1111/ele.13898. (原始内容于2023-02-03) (英语).