^Ghazalli, M.N., Latiff, A., Nikong, D., Besi, E.E., Muhamad Ikhwanuddin, M.E., Saranum, M.M., Noraini, T., Salleh, S. & Mohamad Alias, S. (2023). Trappers in Nature - The Nepenthes of Peninsular Malaysia. Ministry of Natural Resources, Environment and Climate Change. ISBN9789670250472.{{cite book}}: CS1 maint: multiple names: authors list (link)
^Latiff, A.; Ghazalli, Mohd Norfaizal; Besi, Edward Entalai; Mat Esa, M. E; Go, R.; Sandin, N.; Endot, Mohd. Ridzuwan; Ali, Norulhuda; Perdan, Khairuddin; Yapp, E. J.; Mohd Nor FIrdaus, R. (2024). "Nepenthes ridzaiana and N. x langkawiensis (Nepenthaceae), a new species and a new nothospecies of pitcher plants from Langkawi Island, Malaysia". The Malaysian Forester. 87 (1): 1–9.