APA

Gupta K. R., . (1978). International economics. : Atma Ram & Sons, Delhi.

Chicago

Gupta K R, . 1978. International economics. : Atma Ram & Sons, Delhi.

Harvard

Gupta K. R., . (1978). International economics. : Atma Ram & Sons, Delhi.

MLA

Gupta K R, . International economics. : Atma Ram & Sons, Delhi. 1978.