APA

Samuelson P. A., . (1980). Economics. : TATA McGraw-Hill Publishing Company, New Delhi.

Chicago

Samuelson Paul A, . 1980. Economics. : TATA McGraw-Hill Publishing Company, New Delhi.

Harvard

Samuelson P. A., . (1980). Economics. : TATA McGraw-Hill Publishing Company, New Delhi.

MLA

Samuelson Paul A, . Economics. : TATA McGraw-Hill Publishing Company, New Delhi. 1980.