Nonica Datta, ed. (2003). Indian History: Ancient and medieval. Encyclopaedia Britannica / Popular Prakashan. էջ 222. ISBN978-81-7991-067-2. «Not known in Indian sources, the name Porus has been conjecturally interpreted as standing for Paurava, that is, the ruler of the Purus, a tribe known in that region from ancient Vedic times.»