एपीए उद्धरण

Manjul Tyagi. Upkar's practice sets SSC central. Upkar Prakashan.

शिकागो स्टाइल उद्धरण

Manjul Tyagi. Upkar's Practice Sets SSC Central. Agra: Upkar Prakashan.

एमएलए उद्धरण

Manjul Tyagi. Upkar's Practice Sets SSC Central. Upkar Prakashan.