Author: Radhakrishnan
Publisher:George Allen and Unwin, London
Copyright:1955
Author: Marshall, Dorothy
Publisher:Longmans, Green and Co., London
Copyright:1956
Author: Archaeological Survey of India.
Publisher:Archaeological Survey of India,New Delhi
Copyright:1992
Author: Rao, N. Lakshminarayan; Chhabra, B. CH.
Publisher:Manager of publication, New Delhi
Copyright:1956
Author: Bhatt, Govardhan P.
Publisher:Chowkhamba Sanskrit Series, Varanasi
Copyright:1962
Author: Marcade, Jean
Publisher:Nagel Publishers, Geneva
Copyright:1962
Author: Kinross, Lord
Publisher:John Murray, London
Copyright:1956
Author: Wheller, James talboys ; Macmillan, Michael
Publisher:Susila Gupta, Calcutta
Copyright:1956
Author: Heaton, E. W.
Publisher:B.T. Batsford Ltd., London
Copyright:1956
Author: Lunia, B.N.
Publisher:Lakshmi Narain Agarwal
Copyright:1955
Author: Lunia, B.N.
Publisher:Agra, Lakshmi Narain Agarwal
Copyright:1955
Author: Lacheman ,Ernest R.
Publisher:Harvard university press,Cambridge
Copyright:1962
Author: National Library of India
Publisher:National Library of India, Calcutta
Copyright:1956