APA aipamena

Puri, G. K. (1992). Political science for civil services preliminary examination. Sudha Pub..

Chicago Style aipamena

Puri, G. K. Political Science for Civil Services Preliminary Examination. New Delhi: Sudha Pub., 1992.

MLA aipamena

Puri, G. K. Political Science for Civil Services Preliminary Examination. Sudha Pub., 1992.