- ↑ Checklist of CITES Species Part 1 CITES species index, 2011
- ↑ Germplasm Resources Information Network (GRIN), 2011
- ↑ Arx, Bertrand von, Jan Schlauer, and Madeline Groves, 2001 CITES Carnivorous Plant Checklist
- ↑ Cheek, M., and M. Jebb, 2001Volume 15 - 2001; Nepenthaceae Flora Malesiana, Series I; Seed Plants
- ↑ 5.0 5.1 Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2014). "Species 2000 & ITIS Catalogue of Life: 2014 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 26 Mayo 2014.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
- ↑ "(Canada);http://siit.conabio.gob.mx (Mexico) ITIS Global: The Integrated Taxonomic Information System". Ginhipos tikang han orihinal han 2017-04-29. Ginkuhà 2014-06-05.