- ↑ 1.0 1.1
"Naja philippinensis". IUCN Red List of Threatened Species. Version 2012.2. International Union for Conservation of Nature. 2009. Ginkuhà 24 Oktubre 2012.
- ↑ Deraniyagala, P.E.P. (1961) The taxonomy of the cobras of south-eastern Asia, Part 2., Spolia Zeylanica 29:205-232
- ↑ Deraniyagala, P.E.P. (1960) The taxonomy of the cobras of south-eastern Asia. , Spolia Zeylanica 29:41-63
- ↑ 4.0 4.1 Taylor, E.H. (1922) The snakes of the Philippine Islands., Manila (Bureau of Printing or Science), Monograph 16: 312 pp.
- ↑ 5.0 5.1 Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ TIGR Reptile Database . Uetz P. , 2 Oktubre 2007