Forbes, Andrew; Henley, Daniel; Ingersoll, Ernest; Henley, David. "Indian Nagas and Draconic Prototypes". The Illustrated Book of Dragons and Dragon Lore. Cognoscenti Books. ASINB00D959PJ0.
Apte, Vaman Shivram (1997). The student's English-Sanskrit dictionary (3rd rev. & enl. ed.). Delhi: Motilal Banarsidass. ISBN81-208-0299-3., p. 423. The first definition of nāgaḥ given reads "A snake in general, particularly the cobra." p.539
Lange, Gerrit (2017). "Western Himalayan Nāgs as Guardians of Water Resources". Journal for the Study of Religion, Nature & Culture. 11 (3): 361–378. doi:10.1558/jsrnc.33600.
McCoy, Alfred W. (1982). "Baylan: animist religion and Philippine peasant ideology". Philippine Quarterly of Culture and Society. 10 (3): 141–194. JSTOR29791761.
Proto-IE: *(s)nēg-o-, Meaning: snake, Old Indian: nāgá- m. 'snake', Germanic: *snēk-a- m., *snak-an- m., *snak-ō f.; *snak-a- vb.: "Indo-European etymology". Archived from the original on 21 January 2019. Retrieved 9 August 2010.
"Lord Shiva". Sanskrit Dictionary. Archived from the original on 24 February 2021. Retrieved 27 September 2018.
Proto-IE: *(s)nēg-o-, Meaning: snake, Old Indian: nāgá- m. 'snake', Germanic: *snēk-a- m., *snak-an- m., *snak-ō f.; *snak-a- vb.: "Indo-European etymology". Archived from the original on 21 January 2019. Retrieved 9 August 2010.
Kubo Tsugunari, Yuyama Akira (tr.). The Lotus Sutra. Revised 2nd ed. Berkeley, Calif. : Numata Center for Buddhist Translation and Research, 2007. ISBN978-1-886439-39-9, pp. 191-192