Kumar, A. (1999). The black economy in India. Penguin Books.
Chicago Style aipamenaKumar, Arun. The Black Economy in India. New Delhi ; New York, NY: Penguin Books, 1999.
MLA aipamenaKumar, Arun. The Black Economy in India. Penguin Books, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.