APA (7th ed.) Zitazioa

Gopalakrishnan, R. (1991). Political geography of India's North East. Vikas.

Chicago Style (17th ed.) Zitazioa

Gopalakrishnan, Ramamoorthy. Political Geography of India's North East. New Delhi: Vikas, 1991.

MLA (9th ed.) Zitazioa

Gopalakrishnan, Ramamoorthy. Political Geography of India's North East. Vikas, 1991.