Author: Pellenc, Baron Jean
Publisher:John Murray, London
Copyright:1936
Author: Balasubrhamanyam, S.R.
Publisher:Orient Longman, Bombay
Copyright:1971
Author: Sarasvati, Bhumanand
Publisher:The Arya Samaj, New Delhi
Copyright:1936
Author: Bhumanand Sarasvati
Publisher:Arya Samaj, New Delhi
Copyright:1936
Author: Tandon, B. C.
Publisher:Chaitanya Publishing House, Allahabad
Copyright:1971
Author: Agrawal, G. D. Bansil, P. C.
Publisher:Vikas Publications, Delhi - Bombay - Banglore
Copyright:1971
Author: Jaffar, S.M.
Publisher:Muhammad sadiq khan , peshawar
Copyright:1936
Author: Gopinatha Rao, T. A.
Publisher:Indological Book House, Varanasi
Copyright:1971
Author: Robinson, Victor
Publisher:Dingwall-Rock, Ltd., New York
Copyright:1936
Author: Sarkar, Jadunath
Publisher:Governmental Central Press, Bombay
Copyright:1936