APA

,, . (1997). Compendium on environment statistics 1997. New Delhi: Central Statistical Organisation.

Chicago

,, . 1997. Compendium on environment statistics 1997. New Delhi: Central Statistical Organisation.

Harvard

,, . (1997). Compendium on environment statistics 1997. New Delhi: Central Statistical Organisation.

MLA

,, . Compendium on environment statistics 1997. New Delhi: Central Statistical Organisation. 1997.