एपीए उद्धरण

Kamra,Krishna. (2006). Economics of tourism: Pricing, impacts,forecasting. viva books.

शिकागो स्टाइल उद्धरण

Kamra,Krishna. Economics of Tourism: Pricing, Impacts,forecasting. New Delhi: viva books, 2006.

एमएलए उद्धरण

Kamra,Krishna. Economics of Tourism: Pricing, Impacts,forecasting. viva books, 2006.