APA

Puri B. R. S. L. R., .Principles of physical chemistry. : S Nagin & Co., Delhi.

Chicago

Puri B R Sharma L R, .Principles of physical chemistry. : S Nagin & Co., Delhi.

Harvard

Puri B. R. S. L. R., .Principles of physical chemistry. : S Nagin & Co., Delhi.

MLA

Puri B R Sharma L R, .: S Nagin & Co., Delhi. .