APA
World bank, . (2007). World development indicators-2007. New Delhi: NSSO.
Chicago
World bank, . 2007. World development indicators-2007. New Delhi: NSSO.
Harvard
World bank, . (2007). World development indicators-2007. New Delhi: NSSO.
MLA
World bank, . World development indicators-2007. New Delhi: NSSO. 2007.