Author: Prasad, Bimal
Publisher:Manohar Publishers and Distributors, New Delhi
Copyright:2009
Author: S. Gopal
Publisher:B.R.Publishing Corporation, Delhi
Copyright:1973
Author: S. Gopal
Publisher:Orient Longman, New Delhi
Copyright:1973
Author: Mukherjee, Mridula
Publisher:Jawaharlal Nehru Memorial Fund, New Delhi
Copyright:2009