एपीए उद्धरण

Chopra, P., & Jha, A. (1970). Delhi, History and Places of Interest, Foreword. Delhi Administration.

शिकागो स्टाइल उद्धरण

Chopra, Prabha, और A.N Jha. Delhi, History and Places of Interest, Foreword. Delhi: Delhi Administration, 1970.

एमएलए उद्धरण

Chopra, Prabha, और A.N Jha. Delhi, History and Places of Interest, Foreword. Delhi Administration, 1970.