APA引文

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

Chicago Edition Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.