APA
Pradhan N. S., . (1973). Commercial Correspondence , commercial eng. 3rd ed. : .
Chicago
Pradhan N S, . 1973. Commercial Correspondence , commercial eng. 3rd ed. : .
Harvard
Pradhan N. S., . (1973). Commercial Correspondence , commercial eng. 3rd ed. : .
MLA
Pradhan N S, . Commercial Correspondence , commercial eng. 3rd ed. : . 1973.