APA-viite

Choudhury, S., Chakrabarti,Deepankar, & Choudhary, S. (2013). An introduction to geographic information technology. I K International.

Chicago-tyylinen lähdeviittaus

Choudhury, Sujit, Chakrabarti,Deepankar, ja Suchandra Choudhary. An Introduction to Geographic Information Technology. New Delhi: I K International, 2013.

MLA-viite

Choudhury, Sujit, et al. An Introduction to Geographic Information Technology. I K International, 2013.