APA (7th ed.) Citation

Delhi (India : Union Territory) & Chopra, P. (1970). Delhi, history and places of interest.

Chicago Style (17th ed.) Citation

Delhi (India : Union Territory) and Prabha Chopra. Delhi, History and Places of Interest. Delhi, 1970.

MLA (8th ed.) Citation

Delhi (India : Union Territory) and Prabha Chopra. Delhi, History and Places of Interest. 1970.