APA Citation

Ray, A. B. (1980). (A) Treatise on exchange arithmetic. Kolkata: Bharat Book Agency.

Chicago Style Citation

Ray, A. B. (A) Treatise On Exchange Arithmetic. Kolkata: Bharat Book Agency, 1980.

MLA Citation

Ray, A. B. (A) Treatise On Exchange Arithmetic. Kolkata: Bharat Book Agency, 1980.

Warning: These citations may not always be 100% accurate.