Delhi Law House. Lal's encyclopedia on Environment Protection and Pollution Laws vol 2 (5th.). Delhi Law House.
Chicago-referens (17:e uppl.)Delhi Law House. Lal's Encyclopedia on Environment Protection and Pollution Laws Vol 2. 5th. Delhi Delhi: Delhi Law House.
MLA-referens (9:e uppl.)Delhi Law House. Lal's Encyclopedia on Environment Protection and Pollution Laws Vol 2. 5th. Delhi Law House.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.