APA
Nag P. ., Senguptha S. ., . (2007). Geographic information system; concept and business opportunities. New Delhi: Concept Publishing Company.
Chicago
Nag Prithvish, Senguptha Smith, . 2007. Geographic information system; concept and business opportunities. New Delhi: Concept Publishing Company.
Harvard
Nag P. ., Senguptha S. ., . (2007). Geographic information system; concept and business opportunities. New Delhi: Concept Publishing Company.
MLA
Nag Prithvish, Senguptha Smith, . Geographic information system; concept and business opportunities. New Delhi: Concept Publishing Company. 2007.