एपीए उद्धरण

Chopra, J. K. Current National Issues and Topics of Social Relevance For state PSC Examiniations. Unique Publishers.

शिकागो स्टाइल उद्धरण

Chopra, J K. Current National Issues and Topics of Social Relevance For State PSC Examiniations. NewDelhi: Unique Publishers.

एमएलए उद्धरण

Chopra, J K. Current National Issues and Topics of Social Relevance For State PSC Examiniations. Unique Publishers.