"Origin and Growth of Feudalism in Early India: From the Mauryas to AD 650" (Munshiram Manoharlal January 2004) ISBN 81-215-1028-7* Keay, John.
"Origin and Growth of Feudalism in Early India: From the Mauryas to AD 650" (Munshiram Manoharlal January 2004) ISBN 81-215-1028-7* Keay, John.