Narayana, V. D. (1997). Watershed management. ICAR.
Chicago Style aipamenaNarayana, V.V. Dhruva. Watershed Management. New Delhi: ICAR, 1997.
MLA aipamenaNarayana, V.V. Dhruva. Watershed Management. ICAR, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.