↑ Robert Beer. The Handbook of Tibetan Buddhist Symbols Serindia Publications 2003 ISBN 978-1-932-47603-3 page 246 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Hale, Wash Edward (1999). Ásura in Early Vedic Religion.