Gopalakrishnan, R. (1991). Political geography of India's North East. Vikas.
Dyfyniad Arddull ChicagoGopalakrishnan, Ramamoorthy. Political Geography of India's North East. New Delhi: Vikas, 1991.
Dyfyniad MLAGopalakrishnan, Ramamoorthy. Political Geography of India's North East. Vikas, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.