Cita APA

Dr.B Gurugnanam. (2009). Geographic Information System. New India Publishing Agency.

Chicago Edition Citation

Dr.B Gurugnanam. Geographic Information System. New Delhi: New India Publishing Agency, 2009.

Cita MLA

Dr.B Gurugnanam. Geographic Information System. New India Publishing Agency, 2009.

Atenció: Aquestes cites poden no estar 100% correctes.