1. A manual on Wildlife species in trade;Bureau,2011
2. Estimating the worldwide extent of illegal fishing;Agnew;PLoS One,2009
3. EUROPOL OCTA, EU Organised Crime Threat Assessment, The Hague, Netherlands (2011).
4. Indian mammals: a field guide;Menon,2014
5. Wildlife (Protection) Act, 1972, Government of India.