APA način citiranja

Kaushal, P., & Sharma, S. P. (2011). Ecological and environmental impact of tourism. Kanishka.

Čikaški stil citiranja

Kaushal, Prerna, i Shashi Prabha Sharma. Ecological and Environmental Impact of Tourism. New Delhi: Kanishka, 2011.

MLA način citiranja

Kaushal, Prerna, i Shashi Prabha Sharma. Ecological and Environmental Impact of Tourism. Kanishka, 2011.