Kumar,Pushpam. (2004). Economics of soil erosion: Issues and imperatives from India. Concept Publishing Company.
Chicago-stil citatKumar,Pushpam. Economics of Soil Erosion: Issues and Imperatives from India. New Delhi: Concept Publishing Company, 2004.
MLA-referensKumar,Pushpam. Economics of Soil Erosion: Issues and Imperatives from India. Concept Publishing Company, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.