एपीए उद्धरण

Surinder Kumar. (2011). Economic impact of travel and tourism. Sonali Publications.

शिकागो स्टाइल उद्धरण

Surinder Kumar. Economic Impact of Travel and Tourism. New Delhi: Sonali Publications, 2011.

एमएलए उद्धरण

Surinder Kumar. Economic Impact of Travel and Tourism. Sonali Publications, 2011.