1. Cardona, George. 1980. On Reasoning from anvaya and vyatireka in Early Advaita. In Studies in Indian Philosophy, A Memorial Volume in Honour of Pandit Sukhlaji Sanghvi, LD Institute of Indology, 1981 ed. D. Malvania and N.J. Shah, Ahmedabad.
2. Dasti, Matthew, and Stephen Phillps. 2017. The Nyāya-sūtra, Selections with Early Commentaries. Indianapolis/Cambridge: Hackett Publishing Company, Inc.
3. Frauwallner, Erich. 1959. Dignāga, sein Werk und seine Entwicklung. In Wiener Zeitschrift für die Kunde Süd- und Ost-Asiens, Band III.
4. Kataoka, Kei. 2014. Falsifiability in Indian Philosophy. South Asian Classical Studies, No. 9.
5. Katsura, Shoryu. 1979. The apoha Theory of Dignāga. Journal of Indian and Buddhist Studies 28-1.