APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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