Singh, S., & Dubey, A. (2002). Gully erosion and management: Methods and applications (a field manual). New Academic.
Παραπομπή Chicago StyleSingh, Savindra, και Alok Dubey. Gully Erosion and Management: Methods and Applications (a Field Manual). New Delhi: New Academic, 2002.
Παραπομπή MLASingh, Savindra, και Alok Dubey. Gully Erosion and Management: Methods and Applications (a Field Manual). New Academic, 2002.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.