Παραπομπή APA

Sisodia, H. (2014). Ecological and environmental impact of tourism. Anmol.

Παραπομπή Chicago Style

Sisodia, Hrishikesh. Ecological and Environmental Impact of Tourism. New Delhi: Anmol, 2014.

Παραπομπή MLA

Sisodia, Hrishikesh. Ecological and Environmental Impact of Tourism. Anmol, 2014.