Clarke et al. (2000). Nepenthes eymae. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 10 May 2006. Listed as Vulnerable (VU D2 v2.3)
Jebb, M.H.P. & M.R. Cheek 1997. A Skeletal Revision of Nepenthes (Nepenthaceae). Blumea 42 (1) : 1–106.