Singh, S., & Dubey, A. (2002). Gully erosion and management: Methods and applications (a field manual). New Academic.
Chicago Style aipamenaSingh, Savindra, and Alok Dubey. Gully Erosion and Management: Methods and Applications (a Field Manual). New Delhi: New Academic, 2002.
MLA aipamenaSingh, Savindra, and Alok Dubey. Gully Erosion and Management: Methods and Applications (a Field Manual). New Academic, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.